356991 (1998 QA1)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5342592316 ± 5.91e-08
Semi-major axis (a)2.1018872400 AU ± 3.24e-08
Inclination (i)8.19293884° ± 1.22e-05
Long. of Asc. Node (Ω)298.84659667° ± 7.09e-05
Arg. of Perihelion (ω)333.18255171° ± 6.78e-05
Mean Anomaly (M)353.18827135° ± 7.09e-05
Mean Motion (n)0.3234432972°/day ± 7.48e-09
Perihelion dist (q)0.97893458 AU ± 1.25e-07
Aphelion dist (Q)3.22483990 AU ± 1.34e-07
Orbital Period3.04729234 yr ± 7.05e-08
Physical Parameters
H (abs. magnitude)19.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.481″
Uncertainty0
Orbit TypeApollo
MOID0.000401 AU
Observations Used201
Oppositions17
Arc Total1998-2023
First Observation Used1998-08-19
Last Observation Used2023-11-19
Observations (202)
Date Type RA Dec Mag Band Observatory
2001-03-13 15:15:59 C 10 44 34.03 -08 33 08.8 413
2001-03-13 15:18:57 C 10 44 33.80 -08 33 08.7 413
2001-03-13 15:21:54 C 10 44 33.58 -08 33 08.6 413
2001-03-13 15:26:29 C 10 44 33.22 -08 33 08.5 413
2001-03-13 15:29:26 C 10 44 32.97 -08 33 08.3 413
2001-03-13 15:32:23 C 10 44 32.73 -08 33 08.2 413
2001-03-15 06:35:27 C 10 41 31.37 -08 31 04.1 d 691
2001-03-15 06:40:53 C 10 41 30.93 -08 31 03.1 d 691
2001-03-15 06:46:23 C 10 41 30.47 -08 31 03.2 d 691
2001-03-16 06:26:28 C 10 39 39.50 -08 29 19.1 d 691
2001-03-16 06:32:02 C 10 39 38.96 -08 29 18.4 d 691
2001-03-16 06:37:56 C 10 39 38.59 -08 29 18.1 d 691
2001-03-29 05:01:18 C 10 15 41.58 -07 45 26.7 711
2001-03-30 05:28:38 C 10 13 56.13 -07 40 42.9 711
2001-08-06 03:06:21 C 14 23 30.87 -14 06 35.0 c 715
2001-08-06 03:16:31 C 14 23 34.33 -14 06 34.1 c 715
2001-08-06 03:26:39 C 14 23 37.66 -14 06 32.5 c 715
2001-10-15 03:42:18 C 21 16 21.796 -00 06 25.71 645
2001-10-15 03:43:29 C 21 16 21.922 -00 06 25.42 645
2001-10-15 03:45:53 C 21 16 22.168 -00 06 24.75 645
2001-10-15 03:47:04 C 21 16 22.291 -00 06 24.62 645
2004-01-28 09:38:27 C 10 56 20.28 -00 40 36.3 d 291
2004-01-28 09:44:03 C 10 56 20.10 -00 40 37.9 d 291
2004-01-28 09:49:23 C 10 56 19.98 -00 40 38.4 d 291
2004-03-13 04:14:03 C 09 56 36.85 -00 11 08.4 d 291
2004-03-13 04:20:02 C 09 56 36.42 -00 11 07.2 d 291
2004-03-13 04:27:49 C 09 56 35.86 -00 11 05.7 d 291
2004-04-01 05:09:05 C 09 30 04.45 +01 18 11.8 d 291
2004-04-01 05:19:28 C 09 30 03.96 +01 18 13.6 d 291
2004-04-01 05:30:02 C 09 30 03.57 +01 18 15.4 d 291
2004-05-09 04:36:15 C 09 28 03.32 +02 07 20.8 d 291
2004-05-09 04:42:34 C 09 28 03.54 +02 07 21.4 d 291
2004-05-09 04:48:08 C 09 28 03.72 +02 07 20.0 d 291
2004-11-05 01:53:06 C 21 05 10.77 -06 00 07.2 d 291
2004-11-05 01:59:52 C 21 05 11.70 -06 00 03.3 d 291
2004-11-05 02:05:34 C 21 05 12.30 -06 00 00.8 d 291
2010-02-15 08:56:30 C 09 29 19.10 +08 22 22.5 r G96
2010-02-15 09:05:48 C 09 29 18.49 +08 22 23.9 r G96
2010-02-15 09:15:08 C 09 29 17.88 +08 22 24.9 r G96
2010-02-15 09:24:28 C 09 29 17.30 +08 22 26.6 r G96
2013-02-03 08:19:05 C 09 19 07.695 +11 09 05.66 L F51
2013-02-03 08:40:08 C 09 19 06.431 +11 09 08.25 L F51
2013-02-03 09:01:21 C 09 19 05.163 +11 09 10.90 L F51
2013-02-03 09:22:23 C 09 19 03.892 +11 09 13.52 L F51
2013-03-21 04:08:04 C 08 23 45.18 +13 14 42.6 o 711
2013-03-21 04:20:15 C 08 23 44.78 +13 14 43.8 o 711
2016-02-28 06:14:37 C 08 24 11.805 +14 52 56.04 L F51
2016-02-28 06:34:18 C 08 24 10.842 +14 52 58.00 L F51
2016-02-28 06:53:51 C 08 24 09.912 +14 52 59.89 L F51
2016-02-28 07:13:20 C 08 24 08.935 +14 53 01.56 L F51