Date Time
(UT)
M.P.
#
Minor Planet Mag Star # Star Mag. R.A. Dec. Delta Mag. Duration
(sec.)
               Nominal Path
2019 Jan 02 06:39 673 Edda 14.6 SAO 98555 8.8 09 24 44.0 +10 56 27 5.8 6.6 WA-MT-Thunder Bay ONT- New Brunswick
2019 Jan 03 01:09 433 Eros 9.1 SAO 39402 7.5 04 14 46.2 +49 29 38 1.8 3.1 BC - AB - Sask. - ND -Des Moine - St Louis_Birmingham
2019 Jan 04 23:25 90 Antiope 13.4 TYC 1868-00281-1 10.8 06 00 17.5 +24 40 38 2.6 8.4 Georgia to North Carolina
2019 Jan 06 13:26 194 Prokne 13.4 TYC 4968-00858-1 11.3 13 55 24.3 -02 07 20 2.3 7.2 central California - northern New Mexico
2019 Jan 08 02:35 1637 Swings 15.2 SAO 43854 8.0 07 34 09.6 +42 05 17 7.1 3.8 Baja CA, Mexico -TX - TN - MD
2019 Jan 10 13:48 623 Chimaera 14.7 SAO 118290 8.5 10 25 24.5 +05 51 56 6.2 6.7 Seattle WA - Saskatoon Sask.
2019 Jan 15 04:07 801 Helwerthia 16.6 SAO 110258 8.2 01 59 10.4 +00 30 25 8.4 2.4 sCA - Flagstaff AZ - Salina KS - Toleda OH - Concord NH
2019 Jan 20 02:50 71 Niobe 12.0 UCAC4 678-034414 11.0 05 08 43.9 +45 27 09 1.4 6.9 Vera Cruz-Pensacola FL-GA-WV-NY- Quebec City
2019 Jan 20 04:56 527 Euryanthe 15.4 SAO 110872 8.9 02 57 48.5 +07 01 09 6.6 5.0 nBaja California- NM-IL-NH
2019 Jan 21 14:01   Venus -4.4 SAO 160163 8.9 16 55 23.7 -19 31 16   467.0 Pacific Northwest; California (twilight)
2019 Jan 27 03:54 863 Benkoela 14.9 PPM 185582 9.7 03 16 00.7 -05 42 29 5.2 3.6 Cordoba Mexico-wFL-eVA
2019 Feb 09 05:04 497 Iva 14.5 UCAC4 596-039036 10.1 07 04 17.4 +29 10 45 4.5 5.5 Mexicali Mexico - Norman OK - Charlotte NC
2019 Feb 11 10:20 301 Bavaria 15.5 SAO 159730 9.3 16 08 41.6 -16 05 36 6.2 2.3 WA/OR- WY - KS -TN - SC
2019 Feb 12 10:46 916 America 15.8 SAO 138233 6.6 11 29 24.2 -00 50 56 9.2 2.8 Baja/Hermosillo/Chihuahua, Mex.- Corpus Christi, TX - Tampa, FL
2019 Feb 18 12:55 396 Aeolia 14.5 c Virginis 4.2 12 39 14.7 -07 59 45 4.6 10.7 SAME AS ABOVE
2019 Feb 19 02:42 186 Celuta 12.8 TYC 2501-00455-1 10.5 09 46 11.1 +30 43 03 2.5 3.7 Fresno, CA-Provo, UT-St Cloud, MN-Quebec
2019 Feb 19 05:21 4388 Jurgenstock 16.7   Sirius -1.4 06 45 08.2 -16 43 22 18.1 1.5 Cabo San Lucas Mex. - El Paso TX - Pueblo CO -Winnipeg MB
2019 Feb 21 00:53 454 Mathesis 12.3 PPM 127664 10.3 10 44 26.8 +17 38 50 2.2 7.7 Oklahoma City - Philadelphia PA
2019 Feb 21 07:33 1232 Cortusa 15.3 SAO 116714 8.6 08 24 02.9 +07 26 42 6.7 3.6 Homer AK - Calgary AB - Minneapolis MN -Philadelphia PA
2019 Mar 10 10:12 907 Rhoda 15.2 SAO 185044 8.7 17 07 49.5 -28 34 49 6.5 5.5 Thunder Bay ON - Toleda OH - Durham NC
2019 Mar 12 05:48 433 Eros 10.5 SAO 114762 6.7 07 00 25.0 +01 55 53 3.9 1.9 San Francisco CA - Sierra Vista AZ - MEX - Brownsville, TX
2019 Mar 19 01:55 358 Apollonia 14.4 ZC 600 6.7 04 04 39.5 +17 31 04 3.0 2.9 Winnipeg MB - Quebec City QC
2019 Mar 19 06:39 1072 Malva 15.6 TYC 0285-01008-1 10.3 12 28 34.1 +03 51 38 5.4 3.6 Portland OR - Pocatello ID - Nashville TN - Myrtle Beach SC
2019 Mar 27 01:09 1086 Nata 15.4 TYC 1824-00174-1 7.7 04 23 07.8 +27 13 49 7.7 2.7 nw AR - Memphis TN - Atlanta GA
2019 Apr 11 04:49 787 Moskva 13.3 SAO 119551 10.0 12 43 10.0 -00 00 09 3.3 3.1 Portland OR - Lubbock TX
2019 Apr 23 06:57   Carme 18.3 UCAC4 335-113276 10.9 17 41 12.3 -23 07 59 7.4 5.7 Bermuda, southeastern USA, Texas
2019 Apr 25 07:32 690 Wratislavia 13.2 TYC 6751-00068-1 10.5 14 55 38.9 -24 33 17 2.8 9.5 Vancouver BC - Ogden UT - Houston TX
2019 Apr 28 03:31 779 Nina 13.4 SAO 137356 8.9 10 07 01.9 -06 22 35 4.5 15.6 Mex. - Albuquerque NM - Fort Collins CO - Dickinson ND - Thompson MB
2019 Apr 29 10:08 489 Comacina 14.1 UCAC4 414-131995 11.0 20 06 43.4 -07 14 42 3.1 10.7 cen Baja Calif. - n Mex. - Odessa TX - St Louis MO
2019 May 09 06:58 225 Henrietta 12.9 TYC 5019-00392-1 10.0 15 52 46.9 -00 25 34 3.0 9.7 Seatle WA - San Antonio TX
2019 May 15 06:52 48 Doris 12.7 UCAC4 513-050070 11.4 09 19 13.5 +12 31 56 1.6 11.6 Medford OR - Moab UT
2019 May 26 05:28 914 Palisana 11.5 SAO 161969 8.1 18 54 46.7 -15 13 39 3.4 6.7 Las Cruces NM - Brownsville TX
2019 Jun 11 02:02 303 Josephina 14.2 UCAC4 336-071211 11.2 14 19 07.5 -22 54 36 3.0 14.3 Detroit MI - Richmond VA
2019 Jun 16 08:57 471 Papagena 11.2 UCAC4 318-180171 10.6 18 21 41.7 -26 24 11 1.1 9.4 Medford OR - Calgary AB
2019 Jul 16 04:40 488 Kreusa 13.4 TYC 0867-00253-1 10.4 11 49 37.8 +11 42 06 3.1 4.5 Helena MT - Denver CO
2019 Jul 23 07:33 445 Edna 14.7 HIP 17094 9.6 03 39 41.4 +37 47 32 5.1 3.2 Vera Cruz Mex. - Savannah GA - Portland ME
2019 Jul 25 08:58 1910 Mikhailov 16.5 TYC 0571-00193-1 9.3 22 42 20.8 +03 22 33 7.2 6.2 Salem OR - Great Falls MT -Brandon MB
2019 Jul 31 10:29 853 Nansenia 16.1 SAO 109816 8.1 01 20 22.6 +09 31 23 4.6 3.6 cen Baja California Mex. - Waco TX - Magee MI
2019 Aug 02 09:49 511 Davida 11.7 TYC 1312-02952-1 9.5 05 52 10.4 +16 04 28 2.3 6.9 San Antonio TX - Charlotte NC
2019 Aug 03 09:34 198 Ampella 13.3 SAO 77832 9.6 06 00 32.9 +25 21 52 3.7 1.4 Cotulla TX -Jackson MI - Richmond VA
2019 Aug 06 08:12 1354 Botha 14.3 TYC 6931-00826-1 10.2 21 03 16.6 -26 55 20 4.1 5.2 San Luis Obispo CA -Price UT -Grand Forks ND - ON
2019 Aug 28 03:20 624 Hektor 14.4 PPM 207420 10.7 23 19 11.2 -02 40 31 0.8 13.6 La Paz Mex. - Monterrey Mex. - Brownsville TX - W Palm Beach FL
2019 Sep 02 10:34 977 Philippa 15.7 TYC 1913-00792-1 9.9 07 16 42.2 +26 02 45 5.8 1.9 Phoenix AZ - Des Moines IA
2019 Sep 04 11:50 366 Vincentina 14.9 SAO 59704 8.5 07 02 00.9 +31 56 18 6.5 3.1 San Jose CA - Ogden UT - Casper WY
2019 Sep 05 05:56 97 Klotho 11.6 HIP 20068 10.5 04 18 11.4 +09 09 20 1.4 4.6 Lincoln NE -Chicago IL - Rochester NY - Portland ME
2019 Sep 06 09:19 294 Felicia 15.3 SAO 93698 9.0 03 58 35.9 +13 06 18 6.3 6.7 San Jose CA -Pueblo CO - St Louis MO - Louisville KY - Richmond VA
2019 Sep 09 00:54 914 Palisana 12.2 TYC 0439-02889-1 10.3 18 09 45.2 +03 54 41 2.1 7.7 Toledo OH - Allentown PA
2019 Sep 10 05:01 200 Dynamene 13.5 TYC 6851-03764-1 9.5 18 15 58.9 -27 37 48 4.0 16.5 Medford OR - Calgary AB
2019 Sep 15 07:19 1149 Volga 16.0 TYC 1882-1545-1 9.9 06 19 50.4 +25 00 39 6.1 2.5 Andrews TX - Fayetteville AR - Dayton OH - Portland ME - St John NB
2019 Sep 23 00:59 410 Chloris 12.5 UCAC4 309-156556 11.3 18 03 23.4 -28 14 52 1.5 5.8 Kansas City MO -Pittsburg PA - Portland ME -Saint John NB
2019 Sep 24 04:11 200 Dynamene 13.6 TYC 6852-05087-1 10.8 18 24 22.5 -26 56 27 2.9 9.6 Los Angeles CA - Las Vegas NV - Rapid City SD
2019 Sep 25 09:21 493 Griseldis 16.4 SAO 60720 7.8 08 18 41.7 +33 20 09 8.6 1.5 San Jose CA - Billings MT - Fort Severn MB
2019 Sep 26 09:57 598 Octavia 14.7 SAO 80087 7.5 08 18 54.5 +21 29 39 7.2 2.4 Baja Calif. - Las Cruces NM - Okla. City OK - Cincinatti OH -Providence RI
2019 Oct 09 04:22 380 Fiducia 13.1 PPM 240745 10.0 22 47 15.9 -17 49 56 3.1 19.0 San Diego CA - San Antonio TX - Orlando FL
2019 Oct 15 06:36 144 Vibilia 12.4 TYC 1896-01786-1 10.9 07 10 07.7 +22 54 42 1.7 10.6 Baja Calif. - Waco TX - Nashville TN - Philadelphia PA - Boston MA - Shelburne NS
2019 Oct 24 06:01 16 Psyche 10.8 UCAC4 362-196994 10.2 20 52 01.0 -17 44 36 1.1 20.6 Volcano HI - San Diego CA - Santa Fe NM - Pueblo CO
2019 Oct 26 06:02 97 Klotho 10.5 PPM 148311 9.8 05 01 06.0 +02 58 05 1.2 15.6 Sacramento CA - El Paso TX - Monterrey Mex. - Vera Cruz
2019 Oct 30 07:37 493 Griseldis 16.2 SAO 61242 6.4 09 04 55.0 +32 22 35 9.8 2.7 cenBaja Calif. - Norman OK - Detroit MI - Toronto / Ottawa / Quebec City - St Anthony NL
2019 Nov 01 02:26 351 Yrsa 15.1 SAO 188092 9.5 19 24 55.9 -26 01 31 5.6 2.1 nBaja Calif. - Tucson AZ - Dalhart TX - Salina KS
2019 Nov 03 13:16 294 Felicia 14.5 PPM 119369 9.8 03 48 05.8 +10 34 19 4.7 5.0 Sacramento CA - Atlanta NV
2019 Nov 14 05:29 1963 Bezovec 14.4 TYC 0804-00989-1 9.8 08 28 01.7 +12 10 11 4.6 3.5 Gainseville / Jacksonville FL
2019 Nov 14 14:00 119 Althaea 11.6 g Tauri 3.8 04 19 47.8 +15 37 39 7.8 6.3 southern BC - Williston ND
2019 Nov 23 02:06 1027 Aesculapia 15.6 ZC 1023 6.3 06 39 31.5 +24 36 02 9.3 5.7 Sarasota / Melbourne FL
2019 Nov 29 05:59 3803 Tuchkova 16.1 SAO 96826 8.2 07 22 15.0 +13 59 12 7.9 5.4 Monterrey Mex. - Houston TX - Indianapolis IN - Quebec
2019 Dec 07 04:46 55 Pandora 11.1 SAO 57893 6.5 05 19 23.8 +33 59 07 4.6 6.1 La Paz Mex. - Laredo TX - Jacksonville FL
2019 Dec 08 11:14 347 Pariana 12.4 SAO 78258 8.1 06 20 59.6 +23 59 15 4.4 4.8 Akiak AK - Seattle WA - Ogden UT - Amarillo TX - Beaumont TX
2019 Dec 17 12:59 1409 Isko 15.3 PPM 125088 9.8 08 17 34.9 +10 26 41 5.5 5.7 San Diego CA - Tucson AZ - El Paso TX
2019 Dec 22 05:38 1963 Bezovec 13.4 SAO 80462 8.8 08 51 34.2 +20 43 35 4.6 4.1 Cordova AK - Whitehorse YT - Fort Laird NT - Detroit MI - Durham NC
2019 Dec 27 13:28 276 Adelheid 14.5 SAO 158095 8.4 13 41 48.1 -17 33 12 6.2 3.7 Portland OR - Provo UT
2019 Dec 29 07:39 691 Lehigh 13.6 TYC 1934-00062-1 10.0 07 59 57.5 +28 03 02 3.6 6.6 Ol+A1:M71ympia WA - Jackson WY - Branson MO - Daytona Beach FL
Royal Astronomical Society of Canada
International Occultation Timing Association
Date Planet # Alt. Star # Sp. Date Planet # Alt. Star # Sp.  
Jan. 8 1637 HIP 36804 F2 Sep. 4 366 TYC 2441-01887-1 A5  
Jan. 10 623 HIP 51023 F0 Sep. 6 294 TYC 0665-01048-1 G0  
Jan. 15 801 HIP 9272 A3 Sep. 25 493 HIP 40716 A0  
Jan. 20 527 TYC 0054-00311-1 F8 Sep. 26 598 TYC 1390-1444-1 K0  
Jan. 27 863 TYC 4714-00841-1 A5 Oct. 9 380 TYC 6390-00185-1 G0  
Feb. 11 301 HIP 79094 F8 Oct. 26 97 TYC 0102-01567-1 G0  
Feb. 12 916 HIP 56061 K2 Oct. 30 493 HIP 44574 A5  
Feb. 21 454 HIP 52533 K2 Nov. 1 351 TYC 6880-00768-1 K0  
Feb. 21 1232 TYC 0209-00528-1 K0 Nov. 3 294 TYC 0661-01278-1 A2  
Mar. 12 433 HIP 33731 B8 Nov. 29 3803 HIP 35730 A0  
Mar. 27 1086 TYC 1824-00174-1 K5 Dec. 8 347 TYC 1878-00726-1 G0  
Apr. 28 779 TYC 4909-01726-1 K5 Dec. 17 1409 TYC 0798-01131-1 F8  
May 26 914 TYC 6281-00133-1 G5 Dec. 22 1963 TYC 1399-01594-1 A0  
Aug. 3 198 TYC 1868-00035-1 A2 Dec. 27 276 TYC 6126-00709-1 K2  
Notes for planetary/asteroidal occultations given in the 2019 RASC Observer’s Handbook. The text in bold font following the date, and for some events, the object name, is given here but is not in the Handbook.
Jan. 3: (433) Eros was mapped by the NEAR spacecraft in 2000-2001. The star = TYC 0823-00693-1, spectral type F5.
Jan. 4: This is of special interest since (90) Antiope is binary with nearly equal components. The star = TYC 3336-00404-1, spectral type K5.
Jan. 21: Venus’ 21
² disk will be 58% sunlit. Only the dark-side reappearance can be seen, but it can be observed well since the sunlit parts of Venus will be about 9² away. Those with large telescopes may see the star faintly 1 or 2 minutes before the predicted reappearance, due to refraction of the star’s light in the atmosphere. A boat or airplane will be needed to see the central flash since the central line of the occultation passes only over the Pacific Ocean southwest of Baja California. SAO 160163 = TYC 6226-01500-1, spectral type A0.
Feb. 18: The star is ZC 1815 = SAO 138892, spectral type K2III, angular diameter 0.002
². For a central occultation, the disappearance and reappearance of the star will take 0.8s and there will be zones 8 km wide at the northern and southern limits where the star will be only partially occulted. The star has two large planets. 9th-mag. stars are 3¢ and 5¢  away.
Feb. 19, Jurgenstock: Sirius, the brightest star in the night sky, is
a Canis Majoris = HIP 32349 = SAO 151881, spectral type A0mA1. Its angular diameter is 0.006². The asteroid’s angular diameter will be 0.005², smaller than Sirius, so even an observer on the central line will see the star fade down and back up in about 1.5 seconds, the value given in the table for the maximum duration, including the effect of the star’s diameter, although there will be no complete occultation of the star. The remaining light of Sirius A is likely to render invisible the 8th-mag. white dwarf companion, Sirius B. The current 1-s cross-track error is at least 6 times the path width, so unless the orbit of the asteroid can be improved, such as with GAIA data, before the event, several stations will need to be set up across the path to ensure that even one of them has an event. The asteroid is named after Jürgen Stock, a Venezuelan astrometrist who died in 2004.
Mar. 10: The star is TYC 6823-01469-1, spectral type F1V. A 10.8-mag. star is 23
² away in position angle (PA) 264°.
Mar. 19, Apollonia: The star is HIP 19036 = SAO 93749, spectral type K2III.
Apr. 11: The star is TYC 4949-00427-1 = UCAC4 450-53228, spectral type F8. A 10.8-mag. companion is 15
² away in PA 303° that won’t be occulted.
Apr. 23: Carme is the 11th satellite of Jupiter, an irregular object of special interest to Brazilian astronomers.
June 16: The star has a companion, TYC 6852-00453-1, of similar brightness 12
² away in PA 197°.
July 23: The star is HD 275682. It has a 12th-mag. companion 23
² away in PA 89° that is not occulted.
July 31: The star is HIP 6268, spectral type G0. It has a 13th-mag. companion 3
² to the north that will be occulted in the south Pacific Ocean and maybe in the coast of South America at dawn.
Aug. 28: Hektor, the largest Trojan asteroid, is about 400 km long and 200 km across in the other directions, a contact binary. It also has a 12-km moon, Skamandrios, in a 624-km orbit with period 3 days that will also occult the star somewhere.  The star is TYC 6931-00826-1.
Sep. 15: The star is a companion of 7th-mag. SAO 78231 which is 21
² away in PA 65° and won’t be occulted.
Oct. 24: Psyche is the largest metallic (M-type) asteroid and is the target of the NASA Psyche mission. The Guide Star Cat. gives the magnitude of the star as 12.4, so it may be a red star.
Nov. 14, Althaea: The star is ZC 635 = HIP 20205 = Hyadum I, spectral type G8III, at the bottom of the Hyades “V”.
Nov. 23: The star is SAO 78596 = HIP 31850, spectral type F8IV.
Dec. 7: The star is HIP 24832, spectral type A7V. A 12th-mag. star is 4
² away in PA 173° and won’t be occulted.
-------------------------
                                                                                                        2019

                                                                                         PLANETARY OCCULTATIONS

                                                     By David W. Dunham, David Herald, Steve Preston, and Derek Breit

     As major, dwarf, and minor planets, and their moons, move across the sky, they occasionally pass directly between an observer and a distant star, producing an occultation. Astronomers have learned much about solar system bodies by carefully monitoring the changing apparent brightness of stars during the immersion and emersion phases of occultations. If the occulting body does not have an atmosphere, the occultation is virtually instantaneous; if there is an atmosphere, it causes the star’s disappearance and reappearance to occur gradually. If a planet has rings or other debris in its environs, the extent and degree of transparency of this material can be precisely mapped. The rings of Uranus, the ring arcs of Neptune, and the atmosphere of Pluto were all discovered by occultation observations. If an occultation is observed at several distributed sites, the size and shape of the occulting body can be determined more accurately than by other Earth-based techniques.
Amateur astronomers can make important contributions to occultation observing campaigns. This is particularly true for minor planet occultations, for which the paths across Earth are often very narrow and uncertain in location (due mainly to uncertainties in the ephemeris of the minor planet). By recording the times of the star’s disappearance and reappearance as seen from several sites (i.e. by noting the edges of the minor planet’s shadow as it sweeps across Earth), the object’s profile can be directly determined. Often timings of adequate accuracy can be made by visual observers using modest telescopes.
When observing an occultation, it is important that an observer know his or her location to within a fraction of a kilometre. Geographic longitude and latitude as well as the altitude of an observing site can be determined with a GPS receiver, from a high-quality topographic map, or from some map websites. If observations are to be of maximum value, the times of immersion and emersion must be determined as accurately as possible-certainly to better than 0.5 seconds, and better than 0.2 seconds for the shortest events (those less than about 10 seconds in duration). Photoelectric equipment with high-speed digital recording systems is well suited for this work. Attaching a low-light-level video camera to a telescope is a less expensive method for accurate timing. Visual observers using tape recorders and shortwave time-signal receivers can also make useful contributions. Even simple measurements of the duration of an occultation made with an ordinary stopwatch can be of value. CCD observers should be aware that most of these systems are incapable of timing accuracies better than about 2 seconds; hence visual observation may be better. Some CCD observers use the trick of turning off the telescope clock drive shortly before the predicted time and let the images trail. The occultation will appear as a break in the trail that can be measured to about a tenth of a second if the moment the exposure is started (just after turning off the clock drive) is accurately timed.
Occultation observations are coordinated in North America by the International Occultation Timing Association (IOTA)  IOTA member or not, IOTA wants to inform you, and others in your area, able to locate stars to 11th magnitude of prediction updates. Please email the longitude and latitude (or location from the nearest town) of convenient observing sites, telescope size(s), and an indication of whether you are mobile to
dunham"at"starpower.net. Individuals interested in joining IOTA should refer to OCCULTATIONS BY THE MOON, p. 1xx in this Handbook, for membership information.
More information is in the Solar System Photometry Handbook (Willmann-Bell, Inc., 1983), Sky & Telescope, and occasional papers in the Astronomical Journal, Icarus, Minor Planet Bulletin, and other scientific journals.
Observations of occultations by major and minor planets, including negative observations, should be sent to
reports"at"asteroidoccultation.com for analysis and publication by IOTA. When reporting timings, describe your geographic longitude, latitude, and altitude (to the nearest arcsecond and 30 meters, respectively), telescope size, timing method, the start and end time of observation, an estimate of the observer’s reaction time (if applicable) and the accuracy of the timing, and whether the reaction time correction has been applied. The report forms at www.asteroidoccultation.com/observations/ are preferred; observational results are also posted there, as well as much more useful information.

Table of Planetary Occultations
     The following two-page table (see p. 2
xx) of planetary occultations by major, dwarf, and minor planets visible from North America and Hawaii for 2019, is based on predictions by Edwin Goffin, Scott Donnell, Steve Preston, Derek Breit, and David Herald. Preston and Breit assisted Dunham in the selection for the two-page table. Most of the occultations are by asteroids, but there is one occultation by Venus and one by Carme, one of the small outer moons of Jupiter. Of special interest are occultations by distant trans-Neptunian and Centaur objects, many of which have moons and some rings. In general, special astrometric observations with large telescopes are needed to predict these occultations well enough for observing campaigns, and these are accomplished usually only a few weeks before the occultation. The few of these events that can be predicted several months in advance are too faint for most amateur telescopes and so are not in our list. These events are announced on Web sites of the Paris Observatory Lucky Star Project, the Rio astrometry group, and RECON, the network of observatories in the western USA dedicated to these observations. But most observers are informed of them via IOTA’s Occult Watcher software described below, via its Lucky Star and Rio group prediction “feeds”.
The successive columns in the table list: (1) the date and central time of the event; (2) the name of the occulting body; (3) the apparent magnitude of the major or minor planet; (4) the catalogue and number of the occulted star; (5) the star’s apparent visual magnitude; (6) the star’s right ascension and (7) declination; (8) the expected magnitude change from the combined brightness; (9) the predicted maximum duration of the occultation in seconds; and (10) the approximate region from which the occultation is predicted to be visible (locations are listed chronologically from first to last). Due to uncertainties mainly in the ephemerides of the minor planets from which these predictions are derived (most star positions are now accurately determined from the European Space Agency’s Gaia mission), the region of visibility of an occultation is uncertain, by about half a path-width for most of the asteroidal occultations listed. Errors may remain, so those near but outside the paths should try to observe. It’s also useful, especially for the brighter stars that produce high signal-to-noise recordings, to observe even if you are located up to about 10 path-widths from the predicted path, to check for the possibility of an occultation by a previously-unknown satellite of the asteroid. Updated maps and more about these events is at
http://www.poyntsource.com/New/RASC_Events.htm.
Note that the times are usually for the geocentric time of closest approach; for any specific location in North America or Hawaii, the event time can be several minutes earlier or later.  A few weeks before each event, improved predictions and the latest path maps may be obtained from Steve Preston’s minor planet occultation website:
www.asteroidoccultation.com. Much other useful information, including interactive maps to zoom in on the path, circumstances for dozens of stations in and near the path, and lists of stars that can be used to pre-point telescopes to the target stars are at http://www.poyntsource.com/New/Global.htm. “Occult Watcher” finds many other minor planet occultations visible from your site or region; it is a free download from http://www.hristopavlov.net/OccultWatcher/publish.htm. Since Occult Watcher works from an interactive Web site, IOTA uses it to coordinate minor planet occultation observation plans.
Star catalogs are abbreviated as follows: SAO, Smithsonian Astrophysical Observatory; ZC, Robertson Zodiacal Catalog; TYC, Tycho-2; PPM, Roeser Positions and Proper Motions; HIP, HIPPARCOS, and UCACx, xth .U. S. Naval Observatory CCD Astrographic Catalog.
Some event stars, marked by * in the main table, have alternative star numbers, shown in the table below:
Planet # is the minor planet number and the alternative star number (Alt. Star #) is from the HIPPARCOS-mission catalogs used for the predictions on IOTA’s minor planet occultation Web sites mentioned above. When known, spectral types (Sp.) are listed for the stars in the table.
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