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
2023-10-24 23:19:06 C 01 02 54.40 +24 28 16.7 V C40
2023-10-24 23:28:20 C 01 02 55.29 +24 28 27.8 V C40
2023-10-25 01:37:26 B 01 03 18.03 +24 33 07.2 q X33
2023-10-25 01:42:32 B 01 03 18.65 +24 33 14.1 q X33
2023-10-25 01:47:38 B 01 03 19.25 +24 33 21.1 q X33
2023-10-25 02:56:58 C 01 03 25.478 +24 35 35.09 V W68
2023-10-25 02:59:34 C 01 03 25.675 +24 35 38.40 V W68
2023-10-25 03:04:08 C 01 03 26.021 +24 35 44.23 V W68
2023-10-25 03:11:58 C 01 03 26.647 +24 35 53.99 V W68
2023-10-25 06:09:04 C 01 03 51.734 +24 37 44.30 X F51
2023-10-25 06:22:07 C 01 03 52.814 +24 38 02.09 X F51
2023-10-25 06:35:04 C 01 03 53.870 +24 38 19.69 X F51
2023-10-25 06:48:11 C 01 03 54.916 +24 38 37.25 X F51
2023-10-25 20:11:58 C 01 05 14.03 +24 52 57.9 q L04
2023-10-25 20:21:42 C 01 05 14.74 +24 53 08.5 q L04
2023-10-29 20:16:53 C 01 11 56.38 +25 58 27.6 V C40
2023-10-29 20:26:13 C 01 11 56.75 +25 58 32.2 V C40
2023-10-29 20:35:27 C 01 11 57.06 +25 58 36.2 V C40
2023-10-30 10:37:50 C 01 12 37.586 +26 04 41.59 V T05
2023-10-30 10:43:03 C 01 12 37.726 +26 04 42.82 V T05
2023-10-30 10:54:02 C 01 12 38.050 +26 04 46.45 V T05
2023-10-30 11:09:08 C 01 12 38.450 +26 04 51.06 V T05
2023-10-30 18:24:29 C 01 13 03.42 +26 06 59.4 V C40
2023-10-30 18:33:49 C 01 13 03.71 +26 07 03.1 V C40
2023-10-30 18:43:05 C 01 13 03.99 +26 07 06.6 V C40
2023-10-30 19:31:37 C 01 13 05.44 +26 07 24.5 V C40
2023-10-30 19:40:58 C 01 13 05.72 +26 07 27.9 V C40
2023-10-30 19:50:12 C 01 13 05.99 +26 07 31.3 V C40
2023-10-31 11:41:57 C 01 13 45.325 +26 13 00.88 X F52
2023-10-31 11:57:03 C 01 13 45.732 +26 13 04.23 X F52
2023-10-31 12:12:04 C 01 13 46.172 +26 13 07.23 X F52
2023-10-31 22:33:35 C 01 14 13.86 +26 15 40.9 V C40
2023-10-31 22:36:14 C 01 14 13.94 +26 15 41.6 V C40
2023-10-31 22:38:46 C 01 14 14.04 +26 15 42.5 V C40
2023-10-31 22:41:07 C 01 14 14.09 +26 15 44.2 V C40
2023-10-31 22:43:29 C 01 14 14.25 +26 15 42.3 V C40
2023-10-31 22:45:51 C 01 14 14.28 +26 15 43.6 V C40
2023-10-31 22:48:12 C 01 14 14.37 +26 15 44.5 V C40
2023-10-31 22:50:34 C 01 14 14.36 +26 15 45.6 V C40
2023-10-31 22:52:57 C 01 14 14.47 +26 15 44.2 V C40
2023-10-31 22:55:18 C 01 14 14.54 +26 15 46.7 V C40
2023-10-31 22:57:40 C 01 14 14.65 +26 15 45.8 V C40
2023-10-31 23:00:03 C 01 14 14.77 +26 15 46.5 V C40
2023-11-01 10:33:50 C 01 14 43.596 +26 19 17.80 V T05
2023-11-01 10:38:24 C 01 14 43.714 +26 19 18.52 V T05
2023-11-01 10:49:21 C 01 14 43.963 +26 19 20.78 V T05
2023-11-01 10:58:24 C 01 14 44.170 +26 19 22.31 X F51
2023-11-01 11:05:51 C 01 14 44.309 +26 19 23.92 V T05
2023-11-01 11:11:31 C 01 14 44.470 +26 19 24.68 X F51
2023-11-01 11:24:30 C 01 14 44.775 +26 19 26.95 X F51
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)