826936 (1998 HH49)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5036549492 ± 9.30e-09
Semi-major axis (a)1.5579522826 AU ± 1.39e-09
Inclination (i)8.42869296° ± 2.03e-06
Long. of Asc. Node (Ω)23.44698206° ± 6.28e-07
Arg. of Perihelion (ω)288.23762386° ± 1.98e-06
Mean Anomaly (M)52.54681269° ± 5.61e-07
Mean Motion (n)0.5068518645°/day ± 6.78e-10
Perihelion dist (q)0.77328190 AU ± 1.45e-08
Aphelion dist (Q)2.34262266 AU ± 1.46e-08
Orbital Period1.94460424 yr ± 2.60e-09
Physical Parameters
H (abs. magnitude)21.37
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.156″
Uncertainty0
Orbit TypeApollo
MOID0.001995 AU
Observations Used201
Radar Obs Used10
Oppositions12
Arc Total1998-2025
First Observation Used1998-04-28
Last Observation Used2025-04-26
Observations (281)
Date Type RA Dec Mag Band Observatory
2023-10-21 11:03:58 C 00 46 31.87 +21 03 38.7 r Q10
2023-10-21 11:13:18 C 00 46 34.63 +21 04 21.5 r Q10
2023-10-21 11:23:23 C 00 46 37.49 +21 05 07.1 r Q10
2023-10-21 18:56:13 V 00 49 01.27 +21 35 16.5 V 270
2023-10-21 18:56:13 v 1 001.45000 +43.56000 270
2023-10-21 19:02:37 V 00 49 02.91 +21 35 42.1 V 270
2023-10-21 19:02:37 v 1 001.45000 +43.56000 270
2023-10-21 19:08:41 V 00 49 04.46 +21 36 06.4 V 270
2023-10-21 19:08:41 v 1 001.45000 +43.56000 270
2023-10-21 19:14:57 V 00 49 06.04 +21 36 30.3 V 270
2023-10-21 19:14:57 v 1 001.45000 +43.56000 270
2023-10-22 04:23:19 C 00 51 33.246 +22 09 30.53 V 703
2023-10-22 04:31:08 C 00 51 34.808 +22 09 57.42 V 703
2023-10-22 04:38:56 C 00 51 36.418 +22 10 23.63 V 703
2023-10-22 04:46:46 C 00 51 38.030 +22 10 49.76 V 703
2023-10-22 09:50:16 C 00 52 46.104 +22 27 13.03 V T05
2023-10-22 09:54:49 C 00 52 46.925 +22 27 26.35 V T05
2023-10-22 09:58:53 C 00 52 47.664 +22 27 38.16 V T05
2023-10-22 10:03:11 C 00 52 48.449 +22 27 50.69 V T05
2023-10-22 22:14:36 C 00 55 25.47 +22 59 30.5 V C40
2023-10-22 22:23:57 C 00 55 27.04 +22 59 52.6 V C40
2023-10-22 22:33:11 C 00 55 28.58 +23 00 14.3 V C40
2023-10-22 23:28:22 C 00 55 42.57 +23 02 19.3 V C23
2023-10-22 23:31:50 C 00 55 43.14 +23 02 27.8 V C23
2023-10-22 23:35:18 C 00 55 43.70 +23 02 36.1 V C23
2023-10-23 01:13:07 V 00 56 11.69 +23 07 00.1 V 270
2023-10-23 01:13:07 v 1 281.32267 +35.80737 270
2023-10-23 01:18:29 V 00 56 12.49 +23 07 12.9 V 270
2023-10-23 01:18:29 v 1 281.32267 +35.80737 270
2023-10-23 01:23:39 V 00 56 13.38 +23 07 26.6 V 270
2023-10-23 01:23:39 v 1 281.32267 +35.80737 270
2023-10-23 01:30:36 V 00 56 14.45 +23 07 43.6 V 270
2023-10-23 01:30:36 v 1 281.32267 +35.80737 270
2023-10-23 18:11:20 C 00 59 07.89 +23 42 10.1 X G02
2023-10-23 18:17:01 C 00 59 08.69 +23 42 21.7 X G02
2023-10-23 18:22:44 C 00 59 09.46 +23 42 33.0 X G02
2023-10-23 18:54:09 C 00 59 11.71 +23 43 52.7 V C40
2023-10-23 19:03:29 C 00 59 12.86 +23 44 10.6 V C40
2023-10-23 19:12:44 C 00 59 14.01 +23 44 28.3 V C40
2023-10-24 08:13:01 C 01 01 07.853 +24 07 38.16 X F52
2023-10-24 08:26:16 C 01 01 09.112 +24 07 59.65 X F52
2023-10-24 08:52:56 C 01 01 11.617 +24 08 42.31 X F52
2023-10-24 09:39:44 C 01 01 15.953 +24 09 54.97 V T05
2023-10-24 09:44:17 C 01 01 16.378 +24 10 01.78 V T05
2023-10-24 09:51:38 C 01 01 17.062 +24 10 12.76 V T05
2023-10-24 10:06:19 C 01 01 18.422 +24 10 34.72 V T05
2023-10-24 19:08:37 C 01 02 33.769 +24 22 24.96 V G33
2023-10-24 19:11:59 C 01 02 34.129 +24 22 30.03 V G33
2023-10-24 19:15:21 C 01 02 34.490 +24 22 34.91 V G33
2023-10-24 23:09:45 C 01 02 53.49 +24 28 05.4 V C40
Radar Observations (10)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2023-10-17 03:40:00 -116896.739 0.2 Hz 8560 -14 -14
2023-10-17 03:50:00 7896510.276 10 us 8560 -14 -14
2023-10-17 04:20:00 7924646.999 1 us 8560 -14 -14
2023-10-17 04:30:00 7934971.643 0.25 us 8560 -14 -14
2023-10-17 10:12:00 -282340.81 0.1 Hz 7159.45 -47 -36
2023-10-17 13:39:00 -372429.1 0.1 Hz 7159.45 -47 -36
2023-10-18 07:20:00 13412114 1 us 8560 -14 -14
2023-10-20 07:30:00 -820448.422 0.1 Hz 8560 -14 -14
2023-10-20 08:00:00 29256044.28 0.375 us 8560 -14 -14
2023-10-21 05:50:00 36807821.03 0.375 us 8560 -14 -14
Station codes
-47 DSS-47 ATCA (W196) -36 DSS-36 Tidbinbilla (34-m) -14 DSS-14 Goldstone (70-m)