MPEC 2018-G121: 2018 GS4
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M.P.E.C. 2018-G121 Issued 2018 Apr. 15, 16:58 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
2018 GS4
Observations:
K18G04S* C2018 04 12.32032 13 57 27.47 +08 33 47.2 19.4 GUEG121G96
K18G04S C2018 04 12.32546 13 57 26.32 +08 32 50.5 19.0 GUEG121G96
K18G04S C2018 04 12.33060 13 57 25.20 +08 31 53.6 19.1 GUEG121G96
K18G04S C2018 04 12.33573 13 57 24.04 +08 30 56.7 19.3 GUEG121G96
K18G04S C2018 04 12.34972 13 57 29.203+08 28 50.89 19.8 wUEG121F51
K18G04S C2018 04 12.36269 13 57 26.417+08 26 28.87 19.1 wUEG121F51
K18G04S C2018 04 12.38858 13 57 20.746+08 21 44.86 19.4 wUEG121F51
K18G04S C2018 04 12.46471 13 56 56.45 +08 07 06.9 19.9 GUEG121I52
K18G04S C2018 04 12.46490 13 56 56.45 +08 07 05.5 18.9 GUEG121I52
K18G04S C2018 04 12.46508 13 56 56.39 +08 07 02.7 18.5 GUEG121I52
K18G04S C2018 04 12.46593 13 56 56.22 +08 06 55.0 19.1 GUEG121I52
K18G04S KC2018 04 12.52813 13 56 55.32 +07 59 12.6 19.4 RUEG121474
K18G04S KC2018 04 12.52885 13 56 55.18 +07 59 04.8 18.7 RUEG121474
K18G04S KC2018 04 12.52957 13 56 55.03 +07 58 57.0 18.8 RUEG121474
K18G04S KC2018 04 12.53029 13 56 54.88 +07 58 48.7 19.2 RUEG121474
K18G04S KC2018 04 12.55959 13 56 52.02 +07 53 06.5 20.1 VqEG121E23
K18G04S KC2018 04 12.57348 13 56 48.98 +07 50 35.2 19.4 VqEG121E23
K18G04S KC2018 04 12.58737 13 56 45.99 +07 48 03.5 19.5 VqEG121E23
K18G04S C2018 04 12.59456 13 56 47.33 +07 43 26.9 19.1 RrEG121P93
K18G04S C2018 04 12.59654 13 56 46.87 +07 43 06.1 19.4 RrEG121P93
K18G04S C2018 04 12.59851 13 56 46.51 +07 42 44.9 19.8 RrEG121P93
K18G04S C2018 04 12.60047 13 56 46.14 +07 42 22.4 19.3 RrEG121P93
K18G04S KC2018 04 13.14554 13 55 25.83 +06 05 03.5 19.1 GUEG121W34
K18G04S KC2018 04 13.16890 13 55 21.20 +06 00 59.4 19.2 GUEG121W34
K18G04S KC2018 04 13.19029 13 55 16.80 +05 57 15.8 19.2 GUEG121W34
K18G04S C2018 04 13.42283 13 54 33.58 +05 17 01.1 18.5 GUEG121I52
K18G04S C2018 04 13.42301 13 54 33.53 +05 16 59.7 18.7 GUEG121I52
K18G04S C2018 04 13.42320 13 54 33.49 +05 16 57.7 18.6 GUEG121I52
K18G04S C2018 04 13.42338 13 54 33.44 +05 16 55.7 18.5 GUEG121I52
K18G04S FC2018 04 13.91508 13 53 31.13 +03 53 01.1 19.3 RqEG121246
K18G04S FC2018 04 13.91523 13 53 31.11 +03 52 59.6 19.2 RqEG121246
K18G04S FC2018 04 13.91575 13 53 30.83 +03 52 55.2 qEG121246
K18G04S FC2018 04 13.91590 13 53 30.79 +03 52 52.5 19.4 RqEG121246
K18G04S KC2018 04 13.94447 13 53 25.82 +03 48 14.1 19.3 VqEG121595
K18G04S KC2018 04 13.95034 13 53 24.74 +03 47 15.7 19.9 VqEG121595
K18G04S KC2018 04 13.97481 13 53 20.41 +03 43 16.4 18.8 UEG121104
K18G04S KC2018 04 13.99975 13 53 15.67 +03 39 08.0 18.7 UEG121104
K18G04S KC2018 04 14.01382 13 53 12.92 +03 36 48.0 19.5 UEG121104
K18G04S KC2018 04 14.03962 13 53 07.13 +03 32 23.1 18.7 RoEG121K88
K18G04S KC2018 04 14.04197 13 53 06.72 +03 32 00.1 18.9 RoEG121K88
K18G04S KC2018 04 14.04431 13 53 06.31 +03 31 36.7 19.3 RoEG121K88
K18G04S C2018 04 14.34145 13 52 27.71 +02 43 39.0 19.8 GUEG121G96
K18G04S C2018 04 14.34662 13 52 26.70 +02 42 48.4 19.4 GUEG121G96
K18G04S C2018 04 14.35176 13 52 25.69 +02 41 58.7 19.1 GUEG121G96
K18G04S C2018 04 14.35690 13 52 24.69 +02 41 09.0 19.1 GUEG121G96
K18G04S C2018 04 14.35728 13 52 24.56 +02 41 04.9 19.1 GUEG121703
K18G04S C2018 04 14.36785 13 52 22.53 +02 39 22.0 19.8 GUEG121703
K18G04S KC2018 04 14.43961 13 52 23.40 +02 30 41.2 18.1 RqEG121E08
K18G04S KC2018 04 14.44825 13 52 21.96 +02 29 17.7 18.0 RqEG121E08
K18G04S KC2018 04 14.45724 13 52 20.34 +02 27 50.9 18.1 RqEG121E08
K18G04S C2018 04 14.83138 13 51 28.21 +01 25 05.6 18.9 RqEG121246
K18G04S C2018 04 14.83178 13 51 28.12 +01 25 02.9 qEG121246
K18G04S C2018 04 14.83269 13 51 28.02 +01 24 54.0 qEG121246
K18G04S C2018 04 14.83339 13 51 27.84 +01 24 47.1 18.9 RqEG121246
K18G04S C2018 04 14.83370 13 51 27.76 +01 24 44.1 qEG121246
K18G04S C2018 04 14.83422 13 51 27.70 +01 24 38.9 qEG121246
K18G04S KC2018 04 15.40954 13 50 15.71 -00 00 01.2 18.2 RqEG121E08
K18G04S KC2018 04 15.41829 13 50 14.31 -00 01 19.8 18.0 RqEG121E08
K18G04S KC2018 04 15.42737 13 50 12.93 -00 02 40.7 18.3 RqEG121E08
K18G04S C2018 04 15.48888 13 49 49.18 -00 14 41.3 18.7 GUEG121I52
K18G04S C2018 04 15.48995 13 49 48.96 -00 14 51.1 19.7 GUEG121I52
K18G04S C2018 04 15.49014 13 49 48.98 -00 14 52.3 19.3 GUEG121I52
K18G04S C2018 04 15.49032 13 49 48.90 -00 14 53.8 19.4 GUEG121I52
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha. Measurer M. Tichy.
1.06-m KLENOT Telescope + CCD.
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore,
P. M. Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
595 Farra d'Isonzo. Observers A. Basana, E. Pettarin, F. Piani. Measurer
A. Basana. 0.61-m f/4.0 reflector + CCD.
703 Catalina Sky Survey. Observer A. R. Gibbs. Measurers B. M. Africano,
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. L. Seaman, F. C. Shelly.
0.68-m Schmidt + 10K CCD.
E08 Wobblesock Observatory, Coonabarabran. Observer J. Nott. 0.35-m
reflector + CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 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. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observers G. J. Leonard, A. D. Grauer. Measurers
B. M. Africano, 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. L. Seaman,
F. C. Shelly. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers J. A. Johnson,
E. J. Christensen, A. R. Gibbs. Measurers B. M. Africano,
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. L. Seaman, F. C. Shelly.
1.0-m reflector + CCD.
K88 GINOP-KHK, Piszkesteto. Observer C. Kalup. Measurer K. Sarneczky.
0.60-m Schmidt + CCD.
P93 Space Tracking and Communications Center, JAXA. Observers K. Nishiyama,
S. Urakawa. 1.0-m f/3.0 reflector + CCD.
W34 Squirrel Valley Observatory, Columbus. Observer R. L. Flynn. 0.20-m f/10
Schmidt-Cassegrain + CCD + f/7.0 focal reducer.
Orbital elements:
2018 GS4 Earth MOID = 0.0425 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 21.43590 (2000.0) P Q
n 0.72094741 Peri. 118.66062 -0.85082102 -0.52235886
a 1.2317814 Node 29.95377 +0.43344547 -0.75898264
e 0.2079831 Incl. 6.55091 +0.29703303 -0.38869857
P 1.37 H 24.9 G 0.15 U 6
Residuals in seconds of arc
180412 G96 0.0 0.1- 180412 P93 1.3+ 0.3- 180414 G96 0.0 0.4-
180412 G96 0.1- 0.1+ 180413 W34 0.4- 0.6- 180414 G96 0.0 0.2-
180412 G96 0.3+ 0.1+ 180413 W34 0.1+ 0.3- 180414 G96 0.1+ 0.0
180412 G96 0.0 0.0 180413 W34 0.6- 0.3- 180414 703 0.6- 0.5-
180412 F51 0.0 0.1- 180413 I52 0.1+ 0.3- 180414 703 0.2- 0.8-
180412 F51 0.0 0.1+ 180413 I52 0.1- 0.2+ 180414 E08 0.2+ 0.0
180412 F51 0.0 0.1- 180413 I52 0.2- 0.2+ 180414 E08 0.6+ 0.4-
180412 I52 0.2- 1.0- 180413 I52 0.4- 0.1+ 180414 E08 0.5- 0.9-
180412 I52 0.4+ 0.3- 180413 246 0.2+ 0.4+ 180414 246 0.7+ 0.2-
180412 I52 0.0 1.1- 180413 246 0.4+ 0.4+ 180414 246 0.3+ 0.9+
180412 I52 0.0 0.6+ 180413 246 2.4- 1.2+ 180414 246 1.0+ 0.5+
180412 474 0.1- 0.0 180413 246 2.6- 0.0 180414 246 0.0 0.2+
180412 474 0.0 0.1+ 180413 595 0.1- 0.1+ 180414 246 0.4- 0.1+
180412 474 0.1+ 0.1+ 180413 595 0.4+ 0.2+ 180414 246 0.1- 0.3-
180412 474 0.1+ 0.3- 180413 104 0.5- 0.5+ 180415 E08 1.0+ 0.3-
180412 E23 0.4+ 0.6+ 180413 104 0.3+ 0.1+ 180415 E08 0.1- 0.1-
180412 E23 0.1- 0.5+ 180414 104 0.5- 0.1- 180415 E08 0.2+ 0.6+
180412 E23 0.3+ 0.0 180414 K88 0.1+ 0.0 180415 I52 0.5+ 0.3-
180412 P93 0.2+ 0.0 180414 K88 0.4+ 0.3+ 180415 I52 0.3- 0.5-
180412 P93 0.4- 0.7+ 180414 K88 0.6+ 0.2+ 180415 I52 0.4+ 0.0
180412 P93 0.5+ 0.9+ 180414 G96 0.1- 0.0 180415 I52 0.4- 0.1+
Ephemeris:
2018 GS4 a,e,i = 1.23, 0.21, 7 q = 0.9756
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 16 20 08 35.3 +79 36 20 0.06916 0.9919 85.7 90.3 22.3
...
2018 03 31 14 52 08.2 +53 39 41 0.04450 1.0190 115.8 61.9 20.4
...
2018 04 08 14 10 43.9 +23 27 26 0.04389 1.0377 145.7 33.0 19.6
...
2018 04 14 13 53 16.3 +03 41 03 0.05194 1.0533 165.6 13.7 19.4
2018 04 15 13 51 00.3 +01 01 03 0.05388 1.0560 168.4 11.1 19.4
2018 04 16 13 48 53.3 -01 27 55 0.05596 1.0587 170.9 8.6 19.4
...
2018 04 22 13 38 56.7 -12 57 54 0.07095 1.0758 175.3 4.4 19.7
...
2018 04 30 13 31 32.7 -21 52 18 0.09579 1.0999 164.8 13.9 20.8
...
2018 05 15 13 30 06.4 -29 06 54 0.1530 1.1477 151.7 24.7 22.3
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-G121
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