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
2023-10-18 04:05:01 C 23 29 07.628 +01 42 53.31 V W87
2023-10-18 04:05:38 C 23 29 09.231 +01 43 21.04 V W87
2023-10-18 04:06:14 C 23 29 10.791 +01 43 47.93 V W87
2023-10-18 04:06:51 C 23 29 12.383 +01 44 15.45 V W87
2023-10-18 04:07:29 C 23 29 14.006 +01 44 43.67 V W87
2023-10-18 04:53:58 C 23 31 39.043 +02 07 02.42 V 703
2023-10-18 05:17:20 C 23 32 36.679 +02 23 52.33 V 703
2023-10-18 18:39:37 C 23 59 51.09 +09 38 14.1 X G02
2023-10-18 18:42:44 C 23 59 55.66 +09 39 30.8 X G02
2023-10-18 18:45:50 C 00 00 00.25 +09 40 47.9 X G02
2023-10-18 20:25:16 C 00 02 12.85 +10 20 48.3 V C40
2023-10-18 20:30:41 C 00 02 20.24 +10 22 52.5 V C40
2023-10-18 20:36:04 C 00 02 27.55 +10 24 55.1 V C40
2023-10-18 20:43:39 C 00 02 37.86 +10 27 47.5 V C40
2023-10-18 20:49:05 C 00 02 45.21 +10 29 50.6 V C40
2023-10-18 20:52:52 C 00 02 57.787 +10 41 39.48 V M22
2023-10-18 20:54:28 C 00 02 52.46 +10 31 52.1 V C40
2023-10-18 20:57:31 C 00 03 03.910 +10 43 23.23 V M22
2023-10-18 21:06:53 C 00 03 16.231 +10 46 52.07 V M22
2023-10-18 21:21:31 C 00 03 35.354 +10 52 15.71 V M22
2023-10-19 08:26:19 V 00 17 07.85 +14 14 20.8 V 270
2023-10-19 08:26:19 v 1 175.46579 -37.91856 270
2023-10-19 08:32:12 V 00 17 13.30 +14 15 50.0 V 270
2023-10-19 08:32:12 v 1 175.46579 -37.91856 270
2023-10-19 08:38:49 V 00 17 19.43 +14 17 29.9 V 270
2023-10-19 08:38:49 v 1 175.46579 -37.91856 270
2023-10-19 08:45:46 V 00 17 25.71 +14 19 15.5 V 270
2023-10-19 08:45:46 v 1 175.46579 -37.91856 270
2023-10-19 15:38:44 C 00 23 28.212 +15 44 37.09 V O85
2023-10-19 15:39:44 C 00 23 28.948 +15 44 49.11 V O85
2023-10-19 15:42:59 C 00 23 31.345 +15 45 28.52 V O85
2023-10-19 15:43:59 C 00 23 32.084 +15 45 40.53 V O85
2023-10-19 15:44:59 C 00 23 32.817 +15 45 52.64 V O85
2023-10-19 15:47:14 C 00 23 34.477 +15 46 19.77 V O85
2023-10-19 15:48:14 C 00 23 35.208 +15 46 31.69 V O85
2023-10-19 15:49:14 C 00 23 35.946 +15 46 43.81 V O85
2023-10-19 15:51:30 C 00 23 37.605 +15 47 10.94 V O85
2023-10-19 15:52:29 C 00 23 38.331 +15 47 22.90 V O85
2023-10-19 15:55:45 C 00 23 40.716 +15 48 01.95 V O85
2023-10-19 15:56:45 C 00 23 41.453 +15 48 13.90 V O85
2023-10-19 16:00:00 C 00 23 43.840 +15 48 52.87 V O85
2023-10-19 16:01:00 C 00 23 44.565 +15 49 04.79 V O85
2023-10-19 16:02:00 C 00 23 45.306 +15 49 16.65 V O85
2023-10-19 18:44:43 C 00 25 49.45 +16 19 35.8 V N89
2023-10-19 18:58:26 C 00 25 59.09 +16 22 05.7 V N89
2023-10-19 19:12:14 C 00 26 08.63 +16 24 35.5 V N89
2023-10-19 19:25:58 C 00 26 18.14 +16 27 02.3 V N89
2023-10-19 19:39:45 C 00 26 27.79 +16 29 29.2 V N89
2023-10-19 19:44:43 C 00 26 44.72 +16 30 34.6 V C40
2023-10-19 19:53:29 C 00 26 37.31 +16 31 54.5 V N89
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)