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
2023-11-01 11:37:30 C 01 14 45.091 +26 19 29.16 X F51
2023-11-03 07:33:32 C 01 16 24.323 +26 28 07.79 V G96
2023-11-03 07:40:57 C 01 16 24.481 +26 28 08.65 V G96
2023-11-03 07:48:21 C 01 16 24.632 +26 28 09.52 V G96
2023-11-03 07:55:47 C 01 16 24.794 +26 28 10.34 V G96
2023-11-03 09:42:52 C 01 16 29.556 +26 28 41.92 V T05
2023-11-03 09:48:16 C 01 16 29.623 +26 28 42.46 V T05
2023-11-03 09:57:10 C 01 16 29.808 +26 28 43.75 V T05
2023-11-03 10:13:18 C 01 16 30.091 +26 28 46.02 V T05
2023-11-05 09:06:37 C 01 18 04.056 +26 34 37.63 V T05
2023-11-05 09:28:56 C 01 18 04.409 +26 34 39.86 V T05
2023-11-05 09:44:00 C 01 18 04.622 +26 34 41.59 V T05
2023-11-05 09:52:03 C 01 18 04.788 +26 34 41.92 V T05
2023-11-06 03:30:56 C 01 18 38.381 +26 36 48.96 V W68
2023-11-06 03:35:31 C 01 18 38.491 +26 36 49.50 V W68
2023-11-06 03:44:51 C 01 18 38.611 +26 36 50.00 V W68
2023-11-06 04:03:52 C 01 18 38.935 +26 36 51.19 V W68
2023-11-06 23:01:32 C 01 19 12.46 +26 37 06.3 V C40
2023-11-06 23:10:46 C 01 19 12.68 +26 37 06.3 V C40
2023-11-06 23:20:00 C 01 19 12.91 +26 37 06.2 V C40
2023-11-07 10:28:42 C 01 19 33.493 +26 38 06.32 X F52
2023-11-07 10:42:40 C 01 19 33.746 +26 38 06.37 X F52
2023-11-07 11:10:31 C 01 19 34.285 +26 38 06.41 X F52
2023-12-03 02:05:56 C 01 40 11.363 +26 18 10.08 V G96
2023-12-03 02:14:00 C 01 40 11.629 +26 18 10.73 V G96
2023-12-03 02:22:03 C 01 40 11.921 +26 18 10.48 V G96
2023-12-03 02:30:05 C 01 40 12.205 +26 18 10.69 V G96
2025-04-26 05:50:32 C 11 16 32.228 +06 33 36.68 V G96
2025-04-26 05:57:56 C 11 16 31.573 +06 33 36.43 V G96
2025-04-26 06:05:19 C 11 16 31.004 +06 33 36.43 V G96
2025-04-26 06:12:42 C 11 16 30.310 +06 33 35.64 V G96
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)