Selection of Occultations by TNOs and Centaurs 2017


| Date + Time Cent.Occ t0 | Object Designation       |    DIAM | V(P) | StarCat + Designation     |     RA (ICRS.EPOCC) DE       | V(S) | DMAG | MXDUR | ELS | ELM | SLT | Ephemeris Reference & Notes
| 2017-01-21  22:20:05 UT | (60558) Echeclus         |    84.0 | 18.1 | G1SRC 2564053041435117056 | 01 09 11.8953  +04 51 31.973 | 14.0 |  4.1 |   4.0 | 076 | 144 | 032 | NIMAv4 (2017-01-14)
| 2017-01-26  14:42:24 UT | (60558) Echeclus         |    84.0 | 18.2 | G1SRC 2564071973651267072 | 01 11 02.7748  +05 03 13.891 | 14.8 |  3.4 |   3.7 | 071 | 088 | 002 | NIMAv4 (2017-01-14)
| 2017-02-06  04:46:25 UT | (55565) 2002 AW197       |   768.0 | 20.0 | URAT1 446-112591          | 09 46 14.5180  -00 57 30.221 | 12.6 |  7.3 |  30.1 | 162 | 074 | 073 | NIMAv2 (2017-01-31)
| 2017-02-08  07:26:21 UT | (10199) Chariklo         |   248.0 | 18.8 | G1SRC 6760266738516212608 | 18 53 14.5132  -31 23 28.345 | 14.0 |  4.8 |   8.0 | 039 | 167 | 091 | NIMAv10 (2017-01-12)
| 2017-02-13  01:27:16 UT | (54598) Bienor           |   207.0 | 19.8 | G1SRC 0327679341527850880 | 02 22 16.7732  +34 51 12.866 | 13.6 |  6.1 |  13.8 | 081 | 122 | 095 | NIMAv8 (2016-12-16)
| 2017-02-27  23:53:15 UT | (47171) 1999 TC36        |   272.0 | 20.0 | URAT1 483-008659          | 02 20 56.6792  +06 25 19.493 | 14.7 |  5.3 |  11.9 | 056 | 038 | 002 | NIMAv3 (2016-07-08) 	 [Note 1]
| 2017-03-10  12:00:59 UT | (60558) Echeclus         |    84.0 | 18.2 | G1SRC 2565711414207528704 | 01 33 58.2803  +07 21 10.039 | 14.1 |  4.2 |   2.2 | 034 | 120 | 095 | NIMAv4 (2017-01-14)
| 2017-03-10  19:23:50 UT | (10199) Chariklo         |   248.0 | 18.8 | G1SRC 6760106415974529024 | 19 00 37.6187  -31 16 28.533 | 12.6 |  6.2 |  13.1 | 068 | 134 | 096 | NIMAv10 (2017-01-12)
| 2017-03-19  18:10:21 UT | (55637) 2002 UX25        |   665.0 | 20.1 | G1SRC 0021718412665759744 | 02 42 35.2639  +09 31 13.543 | 14.3 |  5.8 |  25.3 | 042 | 142 | 059 | NIMAv2+ (2016-02-24)
| 2017-04-09  02:25:34 UT | (10199) Chariklo         |   248.0 | 18.8 | G1SRC 6757456455517129344 | 19 04 03.6288  -31 17 15.222 | 14.0 |  4.8 |  51.9 | 096 | 109 | 095 | NIMAv10 (2017-01-12)
| 2017-06-22  21:18:30 UT | (10199) Chariklo         |   248.0 | 18.5 | G1SRC 6760223754481862656 | 18 55 15.6554  -31 31 21.664 | 14.1 |  4.4 |  11.3 | 167 | 149 | 002 | NIMAv10 (2017-01-12)
| 2017-06-23  19:37:47 UT | (60558) Echeclus         |    84.0 | 18.4 | G1SRC 0025887142283004928 | 02 43 12.3006  +12 58 57.582 | 13.2 |  5.2 |   2.7 | 050 | 046 | 000 | NIMAv4 (2017-01-14)
| 2017-07-23  05:44:17 UT | (10199) Chariklo         |   248.0 | 18.5 | 4UC 293-209594            | 18 48 09.3548  -31 26 32.541 | 13.9 |  4.6 |  11.8 | 158 | 159 | 000 | NIMAv10 (2017-01-12)
| 2017-07-28  02:27:30 UT | (307261) 2002 MS4        |   934.0 | 20.5 | G1SRC 4252934203420846976 | 18 35 26.3658  -06 53 24.269 | 15.0 |  5.5 |  41.5 | 150 | 092 | 026 | NIMAv2 (2017-01-25)
| 2017-07-28  20:57:37 UT | (307261) 2002 MS4        |   934.0 | 20.5 | G1SRC 4252934100341490560 | 18 35 23.4138  -06 53 33.577 | 12.5 |  8.0 |  41.8 | 149 | 083 | 033 | NIMAv2 (2017-01-25)
| 2017-08-03  06:27:37 UT | (10199) Chariklo         |   248.0 | 18.6 | G1SRC 6737054570587063040 | 18 45 52.2330  -31 22 02.432 | 14.8 |  3.8 |  13.2 | 148 | 023 | 082 | NIMAv10 (2017-01-12)
| 2017-08-08  05:07:54 UT | (10199) Chariklo         |   248.0 | 18.6 | G1SRC 6737244786095745536 | 18 44 57.2588  -31 19 33.194 | 14.8 |  3.8 |  14.2 | 143 | 042 | 100 | NIMAv10 (2017-01-12)
| 2017-08-10  00:01:23 UT | (84922) 2003 VS2         |   523.0 | 20.0 | G1SRC 0181904956048951168 | 05 13 33.7423  +33 16 28.016 |  8.6 | 11.4 |  24.9 | 058 | 096 | 095 | NIMAv5 (2017-01-16)
| 2017-08-15  11:50:12 UT | (2060) Chiron            |   218.0 | 18.8 | G1SRC 2646699207326630656 | 23 45 27.6974  +02 47 11.260 | 14.1 |  4.8 |  11.6 | 145 | 061 | 045 | NIMAv6 (2017-01-23)   [Note 2]
| 2017-08-26  15:27:21 UT | (10199) Chariklo         |   248.0 | 18.7 | 4UC 295-211225            | 18 42 18.3289  -31 08 05.097 | 14.6 |  4.2 |  21.2 | 125 | 067 | 025 | NIMAv10 (2017-01-12)
| 2017-10-05  23:51:38 UT | (P8M01) Triton           |  2705.2 | 13.5 | G1SRC 2610107907030969600 | 22 54 18.4369  -08 00 08.317 | 12.4 |  1.4 | 161.1 | 149 | 034 | 100 | JPL Horizons/2017-02-10/DE431mx/nep081xl
| 2017-10-05  23:51:29 UT | (P8M01) Triton           |  2705.2 | 13.5 | G1SRC 2610107907030969600 | 22 54 18.4369  -08 00 08.317 | 12.4 |  1.4 | 161.1 | 149 | 034 | 100 | Neptune (INPOP13C) + Triton (Emelyanov et al.,2015,MNRAS,454,2205)
| 2017-10-19  00:57:21 UT | (54598) Bienor           |   207.0 | 19.5 | G1SRC 0142959395197911040 | 03 05 19.2562  +39 38 43.264 | 14.7 |  4.7 |  10.7 | 144 | 135 | 001 | NIMAv8 (2016-12-16)
| 2017-11-19  10:23:36 UT | (10199) Chariklo         |   248.0 | 18.9 | G1SRC 6761362745448535552 | 18 49 54.4138  -29 52 52.104 | 14.9 |  4.0 |   8.4 | 044 | 035 | 001 | NIMAv10 (2017-01-12)
| 2017-12-02  07:26:48 UT | (145451) 2005 RM43       |   580.0 | 20.2 | G1SRC 3405079209326939264 | 04 47 54.8602  +15 34 22.655 | 14.8 |  5.4 |  23.2 | 173 | 021 | 097 | NIMAv4 (2016-12-07)
| 2017-12-04  00:32:07 UT | 29P/SW1                  |    60.0 | 14.9 | G1SRC 6890866042467164288 | 21 18 24.8827  -13 21 43.296 | 14.5 |  1.0 |   2.4 | 066 | 119 | 100 | JPL Horizons/2017-02-12/DE431/JPL#K192/1 [Note 3]
| 2017-12-29  16:32:34 UT | (54598) Bienor           |   207.0 | 19.5 | G1SRC 0141857753266874240 | 02 49 15.5346  +38 29 52.269 | 12.8 |  6.7 |  13.8 | 130 | 026 | 084 | NIMAv8 (2016-12-16)

Notes : (10199) Chariklo has a ring system in 390/415 km distance to the body center.
Note 1: (47171) 1999 TC36 has two companions with diam. ~251 km and ~132 km.
Note 2:  (2060) Chiron has a possible ring system in ~324 km distance to center.
Note 3: For 29P/SW1 T-mag was used, as N-mag not computed by JPL Horizon.

Prediction by M. Kretlow (IOTA/ES): http://astro.kretlow.de
NIMA orbits and ephemeris provided by J. Desmars (IMCCE, Paris).

G1SRC: Position and proper motions from HSOY catalogue
4UC  : Position and proper motions from UCAC4 catalogue
URAT1: Position and proper motions from URAT1 catalogue

DIAM : Estimated mean diameter of asteroid/planet [km]
V(P) : Visual magnitude of the asteroid/planet [mag]
V(S) : (Visual) magnitude of the target star [mag] (HSOY: Gaia G-band)
DMAG : Estimated visual light drop [mag]
MXDUR: Estimated central line occultation duration [s]
ELS  : Elongation to the Sun [deg]
ELM  : Elongation to the Moon [deg]
SLT  : Moon sunlit in percent [%]

Header line 1 on the maps: Date, Time of central occultation, Solar System Object, Star (HSOY/Gaia DR1 source ID), [StarMag, MagDrop, Max.Duration].
Header line 2 on the maps: ICRS star coordinates at occultation epoch.
The dashed / dotted line parallel to the ground track is the formal 1-sigma uncertainty of the prediction. The red dot marks t0 (central occultation time).

Changelog: Do not forget to reload the images (might be cached in your browser)!

2017/02/07 10:05UT: Three events erroneously assigned to 2008 OG19 corrected and reassigned to (54598) Bienor.
2017/02/09 23:55UT: New maps generated and uploaded (showing international borders and dark side of the Earth).
2017/02/11 00:15UT: Occultation by Triton added. Two different ephemerides (JPL Horizon and analytical by Emelyanov et al., 2015).
2017/02/12 16:35UT: Occultation by Centaur 29P/Schwassmann-Wachmann 1 added.

See also TNO predictions by Jean Lecacheux (Meudon, France)

Thumbnail 2017-01-21_22h20UT_60558_Echeclus.png Thumbnail 2017-01-26_14h42UT_60558_Echeclus.png Thumbnail 2017-02-06_04h46UT_55565_2002AW197.png Thumbnail 2017-02-08_07h26UT_10199_Chariklo.png Thumbnail 2017-02-13_01h27UT_54598_Bienor.png
2017-01-21_22h20UT_60558_Echeclus 2017-01-26_14h42UT_60558_Echeclus 2017-02-06_04h46UT_55565_2002AW197 2017-02-08_07h26UT_10199_Chariklo 2017-02-13_01h27UT_54598_Bienor
Thumbnail 2017-02-27_23h53UT_47171_1999TC36.png Thumbnail 2017-03-10_12h01UT_60558_Echeclus.png Thumbnail 2017-03-10_19h24UT_10199_Chariklo.png Thumbnail 2017-03-19_18h10UT_55637_2002UX25.png Thumbnail 2017-04-09_02h26UT_10199_Chariklo.png
2017-02-27_23h53UT_47171_1999TC36 2017-03-10_12h01UT_60558_Echeclus 2017-03-10_19h24UT_10199_Chariklo 2017-03-19_18h10UT_55637_2002UX25 2017-04-09_02h26UT_10199_Chariklo
Thumbnail 2017-06-22_21h18UT_10199_Chariklo.png Thumbnail 2017-06-23_19h38UT_60558_Echeclus.png Thumbnail 2017-07-23_05h44UT_10199_Chariklo.png Thumbnail 2017-07-28_02h27UT_307261_2002MS4.png Thumbnail 2017-07-28_20h58UT_307261_2002MS4.png
2017-06-22_21h18UT_10199_Chariklo 2017-06-23_19h38UT_60558_Echeclus 2017-07-23_05h44UT_10199_Chariklo 2017-07-28_02h27UT_307261_2002MS4 2017-07-28_20h58UT_307261_2002MS4
Thumbnail 2017-08-03_06h28UT_10199_Chariklo.png Thumbnail 2017-08-08_05h08UT_10199_Chariklo.png Thumbnail 2017-08-10_00h01UT_84922_2003VS2.png Thumbnail 2017-08-15_11h50UT_2060_Chiron.png Thumbnail 2017-08-26_15h27UT_10199_Chariklo.png
2017-08-03_06h28UT_10199_Chariklo 2017-08-08_05h08UT_10199_Chariklo 2017-08-10_00h01UT_84922_2003VS2 2017-08-15_11h50UT_2060_Chiron 2017-08-26_15h27UT_10199_Chariklo
Thumbnail 2017-10-05_23h52UT_P8M01_Triton.png Thumbnail 2017-10-05_23h52UT_P8M01_Triton_Eph2.png Thumbnail 2017-10-19_00h57UT_54598_Bienor.png Thumbnail 2017-11-19_10h24UT_10199_Chariklo.png Thumbnail 2017-12-02_07h27UT_145451_2005RM43.png
2017-10-05_23h52UT_P8M01_Triton 2017-10-05_23h52UT_P8M01_Triton_Eph2 2017-10-19_00h57UT_54598_Bienor 2017-11-19_10h24UT_10199_Chariklo 2017-12-02_07h27UT_145451_2005RM43
Thumbnail 2017-12-04_00h32UT_29P_SW1.png Thumbnail 2017-12-29_16h33UT_54598_Bienor.png
2017-12-04_00h32UT_29P_SW1 2017-12-29_16h33UT_54598_Bienor

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