IAA RAS IAA Minor Planet Database

2013 HG20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5757513553 ± 4.80e-07
Semi-major axis (a)2.1682458034 AU ± 2.13e-06
Inclination (i)4.17482697° ± 8.39e-06
Long. of Asc. Node (Ω)203.69070318° ± 4.46e-05
Arg. of Perihelion (ω)89.09706589° ± 4.25e-05
Mean Anomaly (M)308.30412515° ± 2.10e-03
Mean Motion (n)0.3087091517°/day ± 4.54e-07
Perihelion dist (q)0.91987534 AU ± 1.38e-06
Aphelion dist (Q)3.41661626 AU ± 3.51e-06
Orbital Period3.19273425 yr ± 4.70e-06
Physical Parameters
H (abs. magnitude)21.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.336″
Uncertainty1
Orbit TypeApollo
MOID0.053542 AU
Observations Used198
Radar Obs Used1
Oppositions1
Arc Total2013-2013
First Observation Used2013-04-30
Last Observation Used2013-10-30
Observations (208)
Date Type RA Dec Mag Band Observatory
2013-04-30 04:53:36 C 11 44 36.20 +01 57 15.8 – u G96
2013-04-30 05:01:24 C 11 44 35.73 +01 57 20.9 – u G96
2013-04-30 05:09:16 C 11 44 35.19 +01 57 26.4 – u G96
2013-04-30 05:17:32 C 11 44 34.69 +01 57 33.0 – u G96
2013-04-30 05:48:51 C 11 44 32.73 +01 57 55.5 – u G96
2013-04-30 05:55:06 C 11 44 32.33 +01 58 00.7 – u G96
2013-04-30 06:07:45 C 11 44 31.57 +01 58 09.1 – u G96
2013-04-30 19:03:58 C 11 43 46.55 +02 07 43.0 – q K91
2013-04-30 19:08:41 C 11 43 46.25 +02 07 46.1 – q K91
2013-05-01 04:07:06 C 11 43 14.64 +02 13 48.5 – t H21
2013-05-01 04:24:51 C 11 43 13.61 +02 14 01.5 – t H21
2013-05-01 04:27:41 C 11 43 13.71 +02 14 05.0 – t H01
2013-05-01 04:42:36 C 11 43 12.48 +02 14 14.7 – t H21
2013-05-01 04:45:27 C 11 43 12.57 +02 14 17.7 – t H01
2013-05-01 04:54:16 C 11 43 12.05 +02 14 24.1 – t H01
2013-05-01 05:04:01 C 11 43 11.44 +02 14 31.3 – t H01
2013-05-01 21:52:32 C 11 42 14.02 +02 26 19.1 – q J95
2013-05-01 22:55:36 C 11 42 10.33 +02 27 04.4 – q J95
2013-05-01 23:32:53 C 11 42 08.13 +02 27 30.7 – q J95
2013-05-02 04:21:15 C 11 41 52.33 +02 30 58.1 – t H01
2013-05-02 04:44:11 C 11 41 51.00 +02 31 14.7 – u G96
2013-05-02 04:46:48 C 11 41 50.82 +02 31 16.1 – u G96
2013-05-02 04:50:22 C 11 41 50.55 +02 31 18.5 – t H01
2013-05-02 04:53:38 C 11 41 50.42 +02 31 21.3 – u G96
2013-05-02 04:58:28 C 11 41 50.17 +02 31 24.5 – u G96
2013-05-02 05:00:08 C 11 41 50.00 +02 31 25.3 – t H01
2013-05-02 05:03:48 C 11 41 49.84 +02 31 28.8 – u G96
2013-05-02 05:10:19 C 11 41 49.37 +02 31 32.5 – t H01
2013-05-02 06:52:21 C 11 41 43.37 +02 32 44.9 – o 291
2013-05-02 06:57:05 C 11 41 43.08 +02 32 48.2 – o 291
2013-05-02 07:01:50 C 11 41 42.82 +02 32 51.3 – o 291
2013-05-11 23:27:42 C 11 30 57.72 +05 04 38.2 – u 807
2013-05-11 23:37:58 C 11 30 57.32 +05 04 44.5 – u 807
2013-05-11 23:47:26 C 11 30 56.95 +05 04 50.0 – u 807
2013-05-12 05:30:45 C 11 30 43.85 +05 07 55.1 – o 291
2013-05-12 05:34:54 C 11 30 43.68 +05 07 57.6 – o 291
2013-05-12 05:39:04 C 11 30 43.51 +05 08 00.2 – o 291
2013-05-14 23:25:22 C 11 28 36.47 +05 46 06.3 – u 807
2013-05-14 23:34:30 C 11 28 36.14 +05 46 11.3 – u 807
2013-05-14 23:43:38 C 11 28 35.81 +05 46 16.3 – u 807
2013-06-02 04:21:22 C 11 24 37.71 +09 01 59.4 – o 291
2013-06-02 04:32:23 C 11 24 37.79 +09 02 03.1 – o 291
2013-06-02 04:43:25 C 11 24 37.84 +09 02 06.9 – o 291
2013-06-28 04:14:20 C 11 43 24.98 +12 26 44.4 – o 291
2013-06-28 04:23:00 C 11 43 25.32 +12 26 48.1 – o 291
2013-08-26 08:48:59 C 02 02 02.80 +64 36 57.7 – u H21
2013-08-26 08:54:31 C 02 01 59.07 +64 36 02.0 – u H21
2013-08-26 08:58:37 C 02 01 56.35 +64 35 20.8 – u H21
2013-08-26 09:03:06 C 02 01 53.29 +64 34 35.7 – u H21
2013-08-27 08:35:46 C 01 49 37.48 +60 41 35.8 – u H21
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-09-11 05:08:00 -149663.3197 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)