MPEC 2018-E18 : A/2018 C2
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M.P.E.C. 2018-E18 Issued 2018 Mar. 4, 22:45 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
A/2018 C2
Observations:
AK18C020 C2018 01 28.43470 14 11 01.60 +33 34 23.6 20.3 GUEE018G96
AK18C020 C2018 01 28.43982 14 11 02.07 +33 34 26.2 20.7 GUEE018G96
AK18C020 C2018 01 28.45005 14 11 02.99 +33 34 29.7 21.0 GUEE018G96
AK18C020 C2018 01 28.48973 14 11 06.88 +33 34 48.0 20.1 GUEE018G96
AK18C020 C2018 01 28.49380 14 11 07.27 +33 34 49.9 20.2 GUEE018G96
AK18C020 C2018 01 28.49811 14 11 07.68 +33 34 51.7 20.3 GUEE018G96
AK18C020 C2018 01 28.50239 14 11 08.10 +33 34 53.5 20.2 GUEE018G96
AK18C020 C2018 02 05.50901 14 23 51.85 +34 35 51.4 19.9 GUEE018G96
AK18C020 C2018 02 05.51420 14 23 52.34 +34 35 54.1 19.8 GUEE018G96
AK18C020 C2018 02 05.51941 14 23 52.78 +34 35 56.5 20.2 GUEE018G96
AK18C020 C2018 02 05.52461 14 23 53.27 +34 35 59.1 UEE018G96
AK18C020* C2018 02 05.55073 14 23 55.64 +34 36 12.0 19.6 GUEE018G96
AK18C020 C2018 02 05.55240 14 23 55.79 +34 36 12.3 19.5 GUEE018G96
AK18C020 C2018 02 05.55406 14 23 55.93 +34 36 13.2 19.7 GUEE018G96
AK18C020 KC2018 02 06.45547 14 25 18.89 +34 43 28.1 oEE018711
AK18C020 KC2018 02 06.45842 14 25 19.15 +34 43 29.6 oEE018711
AK18C020 KC2018 02 06.46136 14 25 19.41 +34 43 30.9 oEE018711
AK18C020 C2018 02 06.49560 14 25 22.65 +34 43 47.4 19.3 GUEE018I52
AK18C020 C2018 02 06.49943 14 25 22.98 +34 43 49.2 19.4 GUEE018I52
AK18C020 C2018 02 06.50327 14 25 23.35 +34 43 51.1 19.2 GUEE018I52
AK18C020 C2018 02 06.50631 14 25 23.62 +34 43 52.5 19.5 GUEE018I52
AK18C020 C2018 02 07.43478 14 26 48.39 +34 51 24.6 19.6 GUEE018V06
AK18C020 C2018 02 07.43563 14 26 48.49 +34 51 25.1 19.8 GUEE018V06
AK18C020 C2018 02 07.43648 14 26 48.56 +34 51 25.5 19.6 GUEE018V06
AK18C020 C2018 02 07.43734 14 26 48.62 +34 51 25.9 19.8 GUEE018V06
AK18C020 C2018 02 07.44500 14 26 49.30 +34 51 30.0 19.3 GUEE018I52
AK18C020 C2018 02 07.44778 14 26 49.52 +34 51 30.9 19.5 GUEE018I52
AK18C020 C2018 02 07.45055 14 26 49.80 +34 51 32.4 19.1 GUEE018I52
AK18C020 C2018 02 07.45323 14 26 50.02 +34 51 33.6 19.2 GUEE018I52
AK18C020 5C2018 02 07.49118 14 26 53.47 +34 51 52.5 vEE018U69
AK18C020 5C2018 02 07.49446 14 26 53.74 +34 51 54.7 vEE018U69
AK18C020 5C2018 02 07.49773 14 26 54.01 +34 51 56.7 19.3 wvEE018U69
AK18C020 KC2018 02 07.84460 14 27 25.55 +34 54 44.5 19.9 VqEE018C42
AK18C020 KC2018 02 07.86644 14 27 27.48 +34 54 55.5 20.6 VqEE018C42
AK18C020 C2018 02 08.41606 14 28 17.06 +34 59 27.5 19.4 GUEE018I52
AK18C020 C2018 02 08.42032 14 28 17.42 +34 59 29.4 UEE018I52
AK18C020 C2018 02 08.42374 14 28 17.75 +34 59 31.2 19.5 GUEE018I52
AK18C020 C2018 02 08.42860 14 28 18.20 +34 59 33.8 19.4 GUEE018I52
AK18C020 KC2018 02 08.48262 14 28 22.91 +35 00 01.0 oEE018711
AK18C020 KC2018 02 08.48539 14 28 23.19 +35 00 02.2 oEE018711
AK18C020 KC2018 02 08.48817 14 28 23.40 +35 00 03.9 oEE018711
AK18C020 C2018 02 09.42883 14 29 47.61 +35 07 50.4 19.1 GUEE018I52
AK18C020 C2018 02 09.43176 14 29 47.89 +35 07 52.2 19.1 GUEE018I52
AK18C020 KC2018 02 09.43324 14 29 47.97 +35 07 53.4 oEE018711
AK18C020 C2018 02 09.43537 14 29 48.20 +35 07 53.8 19.1 GUEE018I52
AK18C020 KC2018 02 09.43601 14 29 48.23 +35 07 54.7 oEE018711
AK18C020 KC2018 02 09.43877 14 29 48.44 +35 07 56.3 oEE018711
AK18C020 C2018 02 09.44314 14 29 48.87 +35 07 57.8 19.2 GUEE018I52
AK18C020 C2018 02 09.45336 14 29 49.77 +35 08 02.9 19.1 GUEE018G96
AK18C020 C2018 02 09.45852 14 29 50.22 +35 08 05.6 19.4 GUEE018G96
AK18C020 C2018 02 09.46367 14 29 50.67 +35 08 08.3 19.5 GUEE018G96
AK18C020 C2018 02 09.46883 14 29 51.10 +35 08 10.6 19.2 GUEE018G96
AK18C020 C2018 02 09.59055 14 30 01.964+35 09 12.52 19.6 iUEE018F51
AK18C020 C2018 02 09.61585 14 30 04.151+35 09 25.34 19.5 iUEE018F51
AK18C020 C2018 02 09.62855 14 30 05.232+35 09 31.78 19.4 iUEE018F51
AK18C020 C2018 02 11.47024 14 32 47.20 +35 24 58.1 19.4 rUEE018I41
AK18C020 C2018 02 11.47321 14 32 47.43 +35 24 59.4 19.8 rUEE018I41
AK18C020 C2018 02 11.49012 14 32 48.89 +35 25 08.5 19.5 rUEE018I41
AK18C020 C2018 02 11.49224 14 32 49.01 +35 25 08.4 17.5 GUEE018I52
AK18C020 C2018 02 11.49358 14 32 49.18 +35 25 10.3 19.4 rUEE018I41
AK18C020 C2018 02 11.49607 14 32 49.34 +35 25 11.3 UEE018I52
AK18C020 C2018 02 11.49989 14 32 49.71 +35 25 12.5 17.8 GUEE018I52
AK18C020 C2018 02 11.51037 14 32 50.62 +35 25 18.8 19.4 rUEE018I41
AK18C020 C2018 02 11.52571 14 32 51.88 +35 25 26.9 19.4 rUEE018I41
AK18C020 C2018 02 11.52965 14 32 52.25 +35 25 28.5 19.4 rUEE018I41
AK18C020 KC2018 02 13.18345 14 35 14.58 +35 39 33.0 19.4 RqEE018A77
AK18C020 KC2018 02 13.20154 14 35 16.10 +35 39 42.1 19.4 RqEE018A77
AK18C020 KC2018 02 13.21964 14 35 17.61 +35 39 51.4 19.3 RqEE018A77
AK18C020 KC2018 02 14.93041 14 37 42.01 +35 54 33.6 17.9 RqEE018K61
AK18C020 KC2018 02 14.93237 14 37 42.12 +35 54 34.3 17.9 RqEE018K61
AK18C020 KC2018 02 16.08932 14 39 17.66 +36 04 38.8 19.1 GUEE018K38
AK18C020 KC2018 02 16.10078 14 39 18.62 +36 04 44.8 18.9 GUEE018K38
AK18C020 KC2018 02 16.11226 14 39 19.54 +36 04 51.4 18.9 GUEE018K38
AK18C020 KC2018 02 16.14436 14 39 22.31 +36 05 08.4 18.6 RqEE018A77
AK18C020 KC2018 02 16.15941 14 39 23.41 +36 05 16.6 18.0 RqEE018A77
AK18C020 KC2018 02 16.17599 14 39 24.74 +36 05 25.4 18.6 RqEE018A77
AK18C020 KC2018 02 17.17180 14 40 45.72 +36 14 06.8 19.5 RUEE018Z84
AK18C020 KC2018 02 17.18083 14 40 46.41 +36 14 12.2 18.9 RUEE018Z84
AK18C020 KC2018 02 17.19036 14 40 47.16 +36 14 17.1 18.9 RUEE018Z84
AK18C020 KC2018 02 19.16291 14 43 23.96 +36 31 36.6 18.5 RoEE018K88
AK18C020 KC2018 02 19.16940 14 43 24.46 +36 31 39.9 18.7 RoEE018K88
AK18C020 KC2018 02 19.17590 14 43 24.95 +36 31 43.4 18.8 RoEE018K88
AK18C020 C2018 02 19.96543 14 44 26.69 +36 38 39.8 18.4 VSEE018033
AK18C020 C2018 02 19.96675 14 44 26.79 +36 38 40.5 18.5 VSEE018033
AK18C020 C2018 02 19.96807 14 44 26.90 +36 38 41.2 18.4 VSEE018033
AK18C020 C2018 02 20.03612 14 44 32.08 +36 39 17.9 18.5 VSEE018033
AK18C020 C2018 02 20.03744 14 44 32.21 +36 39 18.6 18.8 VSEE018033
AK18C020 C2018 02 20.03876 14 44 32.30 +36 39 19.4 19.3 VSEE018033
AK18C020 KC2018 02 20.15746 14 44 41.42 +36 40 23.9 18.6 RqEE018J22
AK18C020 KC2018 02 20.16198 14 44 41.85 +36 40 26.5 18.5 RqEE018J22
AK18C020 KC2018 02 20.16647 14 44 42.12 +36 40 29.4 18.7 RqEE018J22
AK18C020 C2018 02 20.20053 14 44 44.52 +36 40 45.8 18.7 VSEE018033
AK18C020 C2018 02 20.20220 14 44 44.65 +36 40 46.6 18.7 VSEE018033
AK18C020 C2018 02 20.20388 14 44 44.78 +36 40 47.4 18.6 VSEE018033
AK18C020 KC2018 02 21.12636 14 45 55.38 +36 48 57.5 18.9 RUEE018K87
AK18C020 KC2018 02 21.13817 14 45 56.26 +36 49 03.8 18.8 RUEE018K87
AK18C020 KC2018 02 21.14783 14 45 56.98 +36 49 09.0 18.7 RUEE018K87
AK18C020 C2018 02 21.15163 14 45 57.27 +36 49 10.6 19.4 VSEE018033
AK18C020 C2018 02 21.15295 14 45 57.37 +36 49 11.4 19.4 VSEE018033
AK18C020 C2018 02 21.15427 14 45 57.47 +36 49 12.1 19.4 VSEE018033
AK18C020 KC2018 02 21.15857 14 45 57.79 +36 49 14.8 18.5 RUEE018K87
AK18C020 KC2018 02 21.16931 14 45 58.60 +36 49 20.3 18.8 RUEE018K87
AK18C020 KC2018 02 21.18005 14 45 59.40 +36 49 25.9 18.8 RUEE018K87
AK18C020 KC2018 02 21.19079 14 46 00.18 +36 49 31.6 18.7 RUEE018K87
AK18C020 KC2018 02 21.92528 14 46 55.69 +36 56 00.2 17.5 RqEE018K61
AK18C020 KC2018 02 21.92762 14 46 55.88 +36 56 00.9 17.6 RqEE018K61
AK18C020 KC2018 02 21.93037 14 46 56.09 +36 56 03.0 17.4 RqEE018K61
AK18C020 KC2018 02 22.06513 14 47 06.15 +36 57 16.2 18.9 RUEE018K87
AK18C020 KC2018 02 22.08713 14 47 07.75 +36 57 28.3 19.7 RUEE018K87
AK18C020 KC2018 02 22.11731 14 47 09.90 +36 57 44.4 19.6 RUEE018K87
AK18C020 C2018 02 22.13684 14 47 11.32 +36 57 54.4 18.6 VSEE018033
AK18C020 C2018 02 22.13804 14 47 11.41 +36 57 55.1 18.6 VSEE018033
AK18C020 C2018 02 22.13925 14 47 11.50 +36 57 55.7 18.8 VSEE018033
AK18C020 KC2018 02 22.14856 14 47 12.19 +36 58 01.2 19.5 RUEE018K87
AK18C020 KC2018 02 22.16788 14 47 13.60 +36 58 11.5 19.4 RUEE018K87
AK18C020 C2018 02 23.09675114 48 22.30 +37 06 25.7 18.4 VqEE018C95
AK18C020 C2018 02 23.10782114 48 23.11 +37 06 32.1 18.2 VqEE018C95
AK18C020 C2018 02 23.11878014 48 23.89 +37 06 37.7 18.5 VqEE018C95
AK18C020 C2018 02 23.13004614 48 24.68 +37 06 43.7 18.5 VqEE018C95
AK18C020 C2018 02 23.14102414 48 25.47 +37 06 49.7 18.5 VqEE018C95
AK18C020 C2018 02 24.16047 14 49 39.25 +37 15 51.2 20.7 VSEE018033
AK18C020 C2018 02 24.16145 14 49 39.33 +37 15 51.8 20.6 VSEE018033
AK18C020 C2018 02 24.16243 14 49 39.39 +37 15 52.3 20.7 VSEE018033
AK18C020 KC2018 02 24.16987 14 49 40.09 +37 15 58.0 18.4 RqEE018J22
AK18C020 KC2018 02 24.17355 14 49 40.34 +37 15 59.9 18.7 RqEE018J22
AK18C020 KC2018 02 24.17731 14 49 40.61 +37 16 01.9 18.6 RqEE018J22
AK18C020 KC2018 02 25.09644 14 50 45.85 +37 24 09.5 18.4 RoEE018K88
AK18C020 KC2018 02 25.10051 14 50 46.14 +37 24 12.1 18.7 RoEE018K88
AK18C020 KC2018 02 25.10459 14 50 46.39 +37 24 14.5 18.6 RoEE018K88
AK18C020 C2018 02 25.38238 14 51 06.15 +37 26 42.2 18.4 GUEE018703
AK18C020 C2018 02 25.38770 14 51 06.45 +37 26 44.7 18.4 GUEE018703
AK18C020 C2018 02 25.39301 14 51 06.83 +37 26 48.3 18.4 GUEE018703
AK18C020 C2018 02 25.39832 14 51 07.12 +37 26 50.3 18.6 GUEE018703
AK18C020 C2018 02 26.51310 14 52 24.09 +37 36 42.8 18.1 GUEE018I52
AK18C020 C2018 02 26.51627 14 52 24.32 +37 36 44.5 17.9 GUEE018I52
AK18C020 C2018 02 26.52028 14 52 24.55 +37 36 46.5 18.0 GUEE018I52
AK18C020 C2018 02 26.52345 14 52 24.84 +37 36 48.4 17.7 GUEE018I52
AK18C020 KC2018 02 27.39708 14 53 24.10 +37 44 30.6 18.4 RuEE018850
AK18C020 KC2018 02 27.40467 14 53 24.63 +37 44 35.3 18.3 RuEE018850
AK18C020 KC2018 02 27.41286 14 53 25.09 +37 44 39.4 18.3 RuEE018850
AK18C020 KC2018 02 27.42052 14 53 25.68 +37 44 43.6 18.4 RuEE018850
AK18C020 KC2018 02 27.42835 14 53 26.18 +37 44 47.0 18.3 RuEE018850
AK18C020 C2018 02 27.43487 14 53 26.67 +37 44 50.7 18.0 GUEE018I52
AK18C020 KC2018 02 27.43639 14 53 26.59 +37 44 51.5 17.6 RuEE018850
AK18C020 C2018 02 27.43980 14 53 26.99 +37 44 53.4 18.2 GUEE018I52
AK18C020 KC2018 02 27.44404 14 53 27.16 +37 44 55.8 18.3 RuEE018850
AK18C020 C2018 02 27.44421 14 53 27.29 +37 44 55.7 18.2 GUEE018I52
AK18C020 C2018 02 27.44935 14 53 27.63 +37 44 58.3 18.2 GUEE018I52
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers U. Laux,
B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
703 Catalina Sky Survey. Observer R. A. Kowalski. Measurers
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman,
F. C. Shelly. 0.68-m Schmidt + 10K CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
850 Cordell-Lorenz Observatory, Sewanee. Observers D. T. Durig,
T. A. Benedict, N. M. Schlesinger, B. D. Atkins. Measurers D. T. Durig,
T. A. Benedict, N. M. Schlesinger. 0.3-m f/7.6 Schmidt-Cassegrain + CCD.
A77 Observatoire Chante-Perdrix, Dauban. Observers J.-F. Soulier, C. Rinner,
F. Kugel. Measurers J.-F. Soulier, F. Kugel. 0.20-m f/4 Newtonian
reflector + CCD, 0.4-m f/3 reflector + CCD.
C42 Xingming Observatory, Mt. Nanshan. Observers Z. Xu, X. Gao. Measurer
Z. Xu. 0.6-m f/8 Ritchey-Chretien + CCD.
C95 SATINO Remote Observatory, Haute Provence. Observer J. Jahn. 0.60-m
f/3.2 Newtonian reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz,
M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk. 1.8-m
Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observers G. J. Leonard, J. A. Johnson, A. D. Grauer.
Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
R. L. Seaman, F. C. Shelly. 1.5-m reflector + 10K CCD.
I41 Palomar Mountain--ZTF. Measurers Q.-Z. Ye, F. Masci. 1.2-m f/2.44 Oschin
Schmidt + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers D. C. Fuls,
G. J. Leonard, R. A. Kowalski, J. A. Johnson. Measurers E. J. Christensen,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
1.0-m reflector + CCD.
J22 Tacande Observatory, La Palma. Observer K. Hills. 0.5-m f/2.9 astrograph
+ CCD.
K38 M57 Observatory, Saltrio. Observer G. Baj. 0.30-m f/5.5 Ritchey-Chretien
+ CCD.
K61 Rokycany Observatory. Observer M. Adamovsky. 0.51-m f/6.8 reflector
+ CCD.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.30-m
Schmidt-Cassegrain + CCD.
K88 GINOP-KHK, Piszkesteto. Observers A. Bodi, R. Konyves-Toth, J. Vinko.
Measurer K. Sarneczky. 0.60-m Schmidt + CCD.
U69 iTelescope SRO Observatory, Auberry. Observer H. Sato. 0.61-m f/6.5
astrograph + CCD.
V06 Catalina Sky Survey-Kuiper. Observer R. A. Kowalski. Measurers
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman,
F. C. Shelly. 1.55-m reflector + CCD.
Z84 Calar Alto-Schmidt. Observer E. Schwab. Measurers E. Schwab, D. Koschny,
M. Micheli. 0.8-m f/3 Schmidt + CCD.
Orbital elements:
A/2018 C2
Epoch 2018 June 11.0 TT = JDT 2458280.5
T 2018 June 2.22082 TT MPCW
q 1.9564948 (2000.0) P Q
z -0.0009033 Peri. 134.13830 -0.57782566 +0.58837576
+/-0.0000780 Node 91.13801 -0.81108528 -0.49113335
e 1.0017674 Incl. 34.45345 +0.09087450 -0.64234102
From 148 observations 2018 Jan. 28-Feb. 27, mean residual 0".4.
A/2018 C2
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2018 June 2.22827 TT MPCW
q 1.9564831 (2000.0) P Q
z -0.0008442 Peri. 134.13962 -0.57778757 +0.58842456
+/-0.0000780 Node 91.14045 -0.81111601 -0.49109475
e 1.0016516 Incl. 34.45266 +0.09084240 -0.64232584
From 148 observations 2018 Jan. 28-Feb. 27, mean residual 0".4.
The original barycentric 1/a value is +0.00007024 au^-1 and the future
barycentric 1/a value is +0.00041881 au^-1.
Ephemeris:
A/2018 C2
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 02 02 14 18 22.6 +34 08 21 1.9415 2.4350 108.1 22.6 19.6
...
2018 02 17 14 40 31.7 +36 12 37 1.7610 2.3349 113.3 22.9 19.3
...
2018 02 25 14 50 38.9 +37 23 19 1.6758 2.2848 115.6 23.0 19.1
...
2018 03 03 14 57 15.8 +38 16 03 1.6170 2.2489 117.1 23.1 19.0
2018 03 04 14 58 16.5 +38 24 42 1.6076 2.2431 117.3 23.1 19.0
2018 03 05 14 59 15.6 +38 33 18 1.5982 2.2373 117.6 23.1 19.0
...
2018 03 11 15 04 33.7 +39 23 14 1.5448 2.2035 118.9 23.2 18.9
...
2018 03 19 15 09 52.2 +40 22 56 1.4795 2.1611 120.4 23.4 18.7
...
2018 04 03 15 13 52.8 +41 36 00 1.3748 2.0908 122.6 23.7 18.5
Gareth V. Williams (C) Copyright 2018 MPC M.P.E.C. 2018-E18
Read MPEC 2018-E17
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