2012 HL

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5201652917 ± 1.81e-08
Semi-major axis (a)2.0941036759 AU ± 9.10e-09
Inclination (i)9.26935770° ± 5.28e-06
Long. of Asc. Node (Ω)210.16778144° ± 4.86e-06
Arg. of Perihelion (ω)40.64219983° ± 1.23e-05
Mean Anomaly (M)162.65126510° ± 1.24e-05
Mean Motion (n)0.3252482792°/day ± 2.12e-09
Perihelion dist (q)1.00482363 AU ± 3.82e-08
Aphelion dist (Q)3.18338373 AU ± 4.04e-08
Orbital Period3.03038124 yr ± 1.98e-08
Physical Parameters
H (abs. magnitude)22.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.404″
Uncertainty0
Orbit TypeApollo
MOID0.052316 AU
Observations Used229
Radar Obs Used3
Oppositions1
Arc Total2012-2018
First Observation Used2012-04-16
Last Observation Used2018-08-04
Observations (247)
Date Type RA Dec Mag Band Observatory
2012-04-24 22:31:36 C 12 22 08.40 +02 29 04.4 t 204
2012-04-24 22:38:31 C 12 22 09.37 +02 29 40.9 t 204
2012-04-25 02:47:30 C 12 22 55.33 +02 52 17.2 o G48
2012-04-25 02:48:52 C 12 22 55.55 +02 52 25.0 o G48
2012-04-25 02:50:15 C 12 22 55.75 +02 52 32.6 o G48
2012-04-25 02:51:36 C 12 22 55.92 +02 52 39.9 o G48
2012-04-25 02:52:59 C 12 22 56.16 +02 52 47.6 o G48
2012-04-25 03:10:11 C 12 22 58.65 +02 54 20.4 o G48
2012-04-25 03:11:32 C 12 22 58.81 +02 54 28.0 o G48
2012-04-25 03:12:53 C 12 22 59.06 +02 54 35.3 o G48
2012-04-25 04:09:45 C 12 23 05.02 +02 59 33.0 u H21
2012-04-25 04:14:42 C 12 23 05.73 +02 59 59.8 u H21
2012-04-25 04:19:16 C 12 23 06.40 +03 00 24.8 u H21
2012-04-25 04:21:18 C 12 23 08.58 +03 00 44.9 18.3 c 704
2012-04-25 04:23:40 C 12 23 07.03 +03 00 48.7 u H21
2012-04-25 04:36:33 C 12 23 10.79 +03 02 08.5 19.3 c 704
2012-04-25 04:51:48 C 12 23 12.97 +03 03 31.8 18.4 c 704
2012-04-25 05:07:00 C 12 23 15.08 +03 04 55.2 18.7 c 704
2012-04-25 05:22:11 C 12 23 17.30 +03 06 16.8 19.2 c 704
2012-04-25 05:23:09 C 12 23 15.98 +03 06 20.2 u H45
2012-04-25 05:25:07 C 12 23 16.27 +03 06 30.9 u H45
2012-04-25 05:27:01 C 12 23 16.41 +03 06 40.2 u H45
2012-04-25 05:28:14 C 12 23 16.72 +03 06 47.6 u H45
2012-04-25 05:29:45 C 12 23 16.97 +03 06 56.4 u H45
2012-04-25 05:31:11 C 12 23 17.17 +03 07 04.5 u H45
2012-04-25 05:32:56 C 12 23 17.39 +03 07 13.7 u H45
2012-04-25 05:41:46 C 12 23 20.03 +03 08 04.8 18.5 c 704
2012-04-25 05:56:58 C 12 23 22.22 +03 09 28.2 18.9 c 704
2012-04-25 06:27:34 C 12 23 26.63 +03 12 16.0 19.0 c 704
2012-04-25 06:42:47 C 12 23 28.87 +03 13 39.3 18.5 c 704
2012-04-25 22:52:23 C 12 26 20.17 +04 45 16.7 u 160
2012-04-25 22:56:19 C 12 26 20.81 +04 45 39.9 u 160
2012-04-25 23:00:15 C 12 26 21.47 +04 46 02.7 u 160
2012-04-26 20:15:04 C 12 30 31.90 +06 56 28.2 u 089
2012-04-26 20:18:26 C 12 30 32.54 +06 56 50.4 u 089
2012-04-26 20:21:48 C 12 30 33.14 +06 57 11.5 u 089
2012-04-26 20:25:10 C 12 30 33.74 +06 57 32.5 u 089
2012-04-26 20:28:32 C 12 30 34.38 +06 57 54.3 u 089
2012-04-26 20:31:54 C 12 30 34.99 +06 58 16.2 u 089
2012-04-26 20:35:16 C 12 30 35.59 +06 58 38.0 u 089
2012-04-26 20:38:38 C 12 30 36.25 +06 58 59.6 u 089
2012-04-26 20:42:00 C 12 30 36.88 +06 59 20.8 u 089
2012-04-28 03:00:30 C 12 37 30.85 +10 26 55.5 o G48
2012-04-28 03:01:34 C 12 37 31.11 +10 27 03.1 o G48
2012-04-28 03:02:38 C 12 37 31.35 +10 27 11.1 o G48
2012-04-28 05:35:07 C 12 38 05.94 +10 45 36.3 t G56
2012-04-28 05:38:56 C 12 38 06.81 +10 46 04.5 t G56
2012-04-28 05:42:47 C 12 38 07.66 +10 46 32.9 t G56
2012-04-28 05:47:46 C 12 38 08.74 +10 47 09.3 t G56
2012-04-28 20:52:28 C 12 42 02.59 +12 40 58.7 r 106
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-04-30 03:19:00 86208.7414 1.5 Hz 2380 -1 -1
2012-04-30 03:34:00 65521821.75 8 us 2380 -1 -1
2012-05-01 02:38:00 78259.2097 0.4 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)