MPEC 2023-H110 : 2018 HC
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2023-H109
Read MPEC 2023-H111
M.P.E.C. 2023-H110 Issued 2023 April 20, 14:06 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 HC
Revision to MPEC 2018-H37
Additional Observations:
K18H00C C2013 04 05.44528512 41 42.516+01 13 12.65 21.25GVEH110F51
K18H00C C2013 04 05.45639912 41 40.757+01 13 10.46 21.18GVEH110F51
K18H00C C2013 04 10.37425212 27 37.572+00 49 10.05 21.12GVEH110F51
K18H00C C2013 04 10.38518812 27 35.330+00 49 05.89 20.77GVEH110F51
K18H00C C2013 04 11.36724512 24 19.108+00 42 34.71 21.53GVEH110F51
K18H00C C2013 04 11.38092512 24 16.150+00 42 28.87 21.19GVEH110F51
K18H00C C2013 04 11.39458812 24 13.197+00 42 23.03 21.32GVEH110F51
K18H00C C2013 04 11.40836712 24 10.214+00 42 17.28 21.18GVEH110F51
K18H00C KC2013 04 17.30904612 00 30.292-00 13 48.88 21.48GVEH110F51
K18H00C C2018 04 12.49116013 09 29.536-07 22 00.47 21.56GVEH110F52
K18H00C C2018 04 12.50111813 09 27.852-07 22 17.28 20.93GVEH110F52
K18H00C C2023 03 26.49251413 29 08.680-02 28 51.94 23.03GVEH110F51
K18H00C C2023 03 28.41449913 27 46.070-02 43 57.05 22.25GVEH110F51
K18H00C C2023 03 28.42616713 27 45.449-02 44 02.51 22.21GVEH110F51
K18H00C C2023 03 28.43790613 27 44.788-02 44 08.66 21.92GVEH110F51
K18H00C C2023 03 28.44961313 27 44.178-02 44 14.56 22.98GVEH110F51
K18H00C C2023 04 13.37861813 01 41.762-06 46 50.07 20.03GVEH110F52
K18H00C C2023 04 13.39139113 01 39.386-06 47 10.47 20.50GVEH110F52
K18H00C 1C2023 04 19.28752612 39 24.091-10 12 53.35 19.91GVEH110G96
K18H00C 1C2023 04 19.29267712 39 22.468-10 13 07.10 20.15GVEH110G96
K18H00C 1C2023 04 19.29782812 39 20.891-10 13 21.11 20.24GVEH110G96
K18H00C 1C2023 04 19.30297612 39 19.307-10 13 35.00 20.28GVEH110G96
K18H00C KC2023 04 19.33552312 39 09.212-10 15 02.74 20.58GVEH110I52
K18H00C KC2023 04 19.33646712 39 08.924-10 15 05.33 20.13GVEH110I52
K18H00C KC2023 04 19.33740012 39 08.644-10 15 08.53 20.68GVEH110I52
K18H00C KC2023 04 19.33833412 39 08.327-10 15 10.69 21.46GVEH110I52
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M. Huber,
Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers E. J. Christensen,
D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller,
J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L.
Seaman, A. Serrano, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K
CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. J. Christensen, D. Fay, J. B. Fazekas, D. C. Fuls, A. R.
Gibbs, A. D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M.
Larson, G. J. Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly,
K. W. Wierzchos. 1.0-m prime focus + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
130405 F51 15- 8- 230419 I52 15- 12- MPO740861 -0.04 days
Orbital elements:
2018 HC Earth MOID = 0.0640 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 338.37614 (2000.0) P Q
n 0.19709084 Peri. 261.86230 +0.22519847 +0.97214323
a 2.9243213 Node 21.49071 -0.80942582 +0.22379691
e 0.7275522 Incl. 10.21764 -0.54232416 +0.06965976
P 5.00 H 22.91 G 0.15 U 0
Residuals in seconds of arc
130405 F51 0.1- 0.1- 180417 104 0.6- 0.2+ 180421 I52 0.0 0.1-
130405 F51 0.0 0.2+ 180417 104 0.9- 0.1+ 180421 I52 0.1- 0.1-
130410 F51 0.2- 0.1- 180417 033 0.2- 0.1+ 180421 I52 0.0 0.7+
130410 F51 0.1- 0.1- 180417 033 0.1- 0.0 180423 I52 0.0 0.3-
130411 F51 0.0 0.1+ 180417 033 0.1- 0.1+ 180423 I52 0.3- 0.2+
130411 F51 0.0 0.1- 180417 033 0.2- 0.1+ 180423 I52 0.0 0.1+
130411 F51 0.1+ 0.2- 180417 104 0.6+ 0.1+ 180425 807 0.0 0.0
130411 F51 0.2+ 0.1- 180417 246 0.6- 0.2- 180425 807 0.0 0.1-
130417 F51 0.5+ 0.3- 180417 246 0.7+ 0.0 180425 807 0.0 0.1-
180412 F52 0.0 0.2- 180417 246 0.2+ 0.4- 230326 F51 0.1+ 0.0
180412 F52 0.2- 0.0 180417 246 2.3- 0.4- 230328 F51 0.5- 0.3-
180416 G96 0.5+ 0.1+ 180417 246 1.3+ 0.0 230328 F51 0.2- 0.0
180416 G96 0.1+ 0.2+ 180417 246 0.7- 0.0 230328 F51 0.4- 0.2-
180416 G96 0.2+ 0.2- 180418 I52 0.2- 0.8- 230328 F51 0.2+ 0.3-
180416 I52 0.1+ 0.1+ 180418 I52 0.5- 0.2- 230413 F52 0.2- 0.1+
180416 I52 0.2+ 0.1- 180418 I52 0.5- 1.3- 230413 F52 0.1+ 0.1+
180416 I52 0.4+ 0.4+ 180418 I52 1.0- 1.5- 230419 G96 0.3+ 0.1-
180416 I52 0.0 0.1+ 180420 I52 0.2+ 0.4+ 230419 G96 0.2- 0.1+
180416 Z84 0.1+ 0.1+ 180420 I52 0.1- 0.1+ 230419 G96 0.1+ 0.0
180416 Z84 0.1+ 0.1+ 180420 I52 0.1+ 0.3+ 230419 G96 0.3+ 0.0
180416 Z84 0.1+ 0.5+ 180420 I52 0.6- 0.6+ 230419 I52 0.2+ 0.3+
180416 Z84 0.1+ 0.3+ 180420 807 0.1- 0.1- 230419 I52 0.3+ 0.3+
180417 H21 0.1- 0.0 180420 807 0.0 0.3- 230419 I52 0.4+ 0.4-
180417 H21 0.1- 0.4+ 180420 807 0.1- 0.2- 230419 I52 0.0 0.0
180417 H21 0.0 0.3+ 180421 I52 0.8- 0.4-
Ephemeris:
2018 HC a,e,i = 2.92, 0.73, 10 q = 0.7967
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 03 21 13 31 48.0 -01 53 25 0.5261 1.4938 156.8 15.2 23.2
...
2023 04 05 13 19 19.0 -04 05 06 0.3356 1.3341 173.4 4.9 21.6
...
2023 04 13 13 02 45.9 -06 36 40 0.2476 1.2491 174.5 4.4 20.8
...
2023 04 19 12 40 47.8 -09 59 30 0.1881 1.1862 164.1 13.4 20.4
2023 04 20 12 35 48.6 -10 45 38 0.1788 1.1758 162.0 15.3 20.4
2023 04 21 12 30 18.0 -11 36 26 0.1697 1.1654 159.8 17.3 20.3
...
2023 04 27 11 40 31.0 -18 54 21 0.1204 1.1042 142.5 33.7 19.9
...
2023 05 05 08 53 09.0 -33 58 27 0.08209 1.0262 100.3 75.2 20.2
...
2023 05 20 03 47 09.4 -20 53 52 0.1564 0.8990 40.7 132.8 24.6
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-H110
Read MPEC 2023-H109
Read MPEC 2023-H111
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)