MPEC 2018-H88 : 2018 HG2
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M.P.E.C. 2018-H88 Issued 2018 Apr. 26, 15:09 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 HG2
Observations:
K18H02G C2018 04 12.54637 16 44 09.298-21 28 08.65 21.5 wUEH088F51
K18H02G C2018 04 12.55742 16 44 04.403-21 26 34.47 22.5 wUEH088F51
K18H02G C2018 04 12.56847 16 43 59.572-21 25 00.87 UEH088F51
K18H02G C2018 04 12.57952 16 43 54.757-21 23 27.19 21.9 wUEH088F51
K18H02G* C2018 04 23.37239 15 48 02.69 -01 06 26.2 21.3 GUEH088G96
K18H02G C2018 04 23.37754 15 48 01.34 -01 06 00.8 21.7 GUEH088G96
K18H02G C2018 04 23.38269 15 48 00.02 -01 05 36.0 20.6 GUEH088G96
K18H02G C2018 04 23.38785 15 47 58.68 -01 05 10.2 20.9 GUEH088G96
K18H02G C2018 04 23.40323315 47 54.53 -01 03 56.3 21.3 GUEH088H01
K18H02G C2018 04 23.40986815 47 52.83 -01 03 23.8 21.1 GUEH088H01
K18H02G C2018 04 23.41734615 47 50.92 -01 02 47.2 20.4 GUEH088H01
K18H02G C2018 04 23.42625215 47 48.65 -01 02 03.6 20.6 GUEH088H01
K18H02G C2018 04 23.44331 15 47 44.48 -01 00 39.0 21.0 GUEH088I52
K18H02G C2018 04 23.44662 15 47 43.66 -01 00 22.9 21.5 GUEH088I52
K18H02G C2018 04 23.44994 15 47 42.80 -01 00 06.9 21.3 GUEH088I52
K18H02G C2018 04 23.45325 15 47 41.95 -00 59 50.3 21.2 GUEH088I52
K18H02G C2018 04 23.48120 15 47 34.90 -00 57 34.1 21.4 GUEH088G96
K18H02G C2018 04 23.48195 15 47 34.72 -00 57 30.1 UEH088G96
K18H02G C2018 04 23.48271 15 47 34.49 -00 57 26.8 21.2 GUEH088G96
K18H02G C2018 04 23.48346 15 47 34.24 -00 57 23.0 UEH088G96
K18H02G C2018 04 24.34235315 44 19.50 +00 10 16.8 21.2 GUEH088H01
K18H02G C2018 04 24.34820415 44 18.05 +00 10 43.5 20.5 GUEH088H01
K18H02G C2018 04 24.35745015 44 15.78 +00 11 26.0 21.1 GUEH088H01
K18H02G KC2018 04 24.35883 15 44 14.85 +00 11 29.2 20.7 RqEH088734
K18H02G C2018 04 24.36272815 44 14.49 +00 11 50.2 21.1 GUEH088H01
K18H02G KC2018 04 24.39199 15 44 06.78 +00 14 00.1 20.6 RqEH088734
K18H02G KC2018 04 24.40169 15 44 04.38 +00 14 45.7 20.8 RqEH088734
K18H02G C2018 04 25.45169 15 40 14.07 +01 32 03.0 21.3 GUEH088I52
K18H02G C2018 04 25.45832 15 40 12.53 +01 32 31.5 21.0 GUEH088I52
K18H02G C2018 04 25.46165 15 40 11.78 +01 32 45.7 21.1 GUEH088I52
Observer details:
734 Farpoint Observatory. Observer G. Hug. 0.69-m 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. Observer J. A. Johnson. 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.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers B. M. Africano,
G. J. Leonard. 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.
Orbital elements:
2018 HG2 Earth MOID = 0.0376 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 38.80640 (2000.0) P Q
n 0.75437238 Peri. 268.72629 -0.41132601 -0.90483883
a 1.1951219 Node 206.43087 +0.90321173 -0.38840639
e 0.3295431 Incl. 14.29396 +0.12255399 -0.17437654
P 1.31 H 24.3 G 0.15 U 6
Residuals in seconds of arc
180412 F51 0.1- 0.1- 180423 H01 0.5- 0.0 180424 H01 0.2- 0.0
180412 F51 0.8- 0.2+ 180423 H01 0.4- 0.1+ 180424 H01 0.4- 0.1-
180412 F51 0.5- 0.1- 180423 I52 0.4- 0.0 180424 H01 0.4- 0.1-
180412 F51 0.0 0.5- 180423 I52 0.0 0.0 180424 734 0.1- 0.8+
180423 G96 0.1- 0.2- 180423 I52 0.3- 0.2- 180424 H01 0.3- 0.1-
180423 G96 0.4- 0.0 180423 I52 0.4- 0.2+ 180424 734 0.1- 0.2-
180423 G96 0.3- 0.5- 180423 G96 0.1- 0.1+ 180424 734 0.8- 1.0+
180423 G96 0.5- 0.0 180423 G96 0.1+ 0.5+ 180425 I52 0.3- 0.3-
180423 H01 0.5- 0.0 180423 G96 0.5- 0.1+ 180425 I52 0.4- 0.1+
180423 H01 0.5- 0.0 180423 G96 1.4- 0.2+ 180425 I52 0.2- 0.1+
Ephemeris:
2018 HG2 a,e,i = 1.20, 0.33, 14 q = 0.8013
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 03 27 19 48 19.8 -56 50 32 0.1136 0.9853 80.5 93.0 22.8
...
2018 04 11 16 55 02.4 -25 11 04 0.1058 1.0668 125.4 49.9 21.4
...
2018 04 19 16 07 09.3 -07 57 29 0.1267 1.1106 145.2 31.1 21.4
...
2018 04 25 15 41 53.4 +00 59 58 0.1517 1.1431 153.0 23.5 21.6
2018 04 26 15 38 20.2 +02 10 36 0.1565 1.1485 153.7 22.8 21.7
2018 04 27 15 34 56.7 +03 16 25 0.1614 1.1538 154.2 22.3 21.7
...
2018 05 03 15 17 36.4 +08 23 19 0.1938 1.1855 154.3 21.7 22.2
...
2018 05 11 15 01 01.5 +12 15 40 0.2434 1.2266 149.9 24.4 22.8
...
2018 05 26 14 44 47.9 +14 17 58 0.3518 1.2989 138.9 30.8 23.9
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-H88
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