621890 (2011 PO1)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6342730071 ± 1.43e-08
Semi-major axis (a)2.5156532609 AU ± 2.86e-09
Inclination (i)5.74211173° ± 2.43e-06
Long. of Asc. Node (Ω)210.64238462° ± 7.52e-05
Arg. of Perihelion (ω)166.79087561° ± 7.50e-05
Mean Anomaly (M)197.60687278° ± 2.40e-06
Mean Motion (n)0.2470222680°/day ± 4.21e-10
Perihelion dist (q)0.92004230 AU ± 3.61e-08
Aphelion dist (Q)4.11126422 AU ± 3.64e-08
Orbital Period3.99003010 yr ± 6.81e-09
Physical Parameters
H (abs. magnitude)20.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.199″
Uncertainty0
Orbit TypeApollo
MOID0.034445 AU
Observations Used138
Oppositions10
Arc Total2011-2024
First Observation Used2011-08-04
Last Observation Used2024-01-07
Observations (146)
Date Type RA Dec Mag Band Observatory
2011-08-19 22:41:16 C 00 05 44.62 +65 44 07.7 u J95
2011-08-21 09:05:37 C 01 02 27.36 +68 40 34.8 t H21
2011-08-21 09:11:48 C 01 02 38.53 +68 40 59.1 t H21
2011-08-21 09:17:51 C 01 02 49.44 +68 41 22.9 t H21
2011-08-21 09:23:54 C 01 03 00.38 +68 41 46.6 t H21
2011-08-21 09:29:55 C 01 03 11.24 +68 42 09.9 t H21
2011-08-21 09:35:55 C 01 03 22.14 +68 42 33.3 t H21
2011-11-24 13:56:51 C 09 20 31.470 +04 41 41.70 o 568
2011-11-24 13:59:15 C 09 20 31.458 +04 41 40.95 o 568
2011-11-24 14:01:37 C 09 20 31.441 +04 41 40.11 o 568
2011-12-24 09:11:36 C 08 54 33.27 +03 34 06.5 o H21
2011-12-24 09:29:50 C 08 54 32.03 +03 34 09.5 o H21
2011-12-24 09:48:14 C 08 54 30.75 +03 34 12.1 o H21
2012-01-18 08:44:55 C 08 10 16.73 +06 37 15.9 o 695
2012-01-18 08:57:24 C 08 10 15.84 +06 37 21.0 o 695
2012-01-18 09:03:36 C 08 10 15.38 +06 37 23.1 o 695
2015-05-22 13:25:31 C 20 29 40.461 -10 19 11.84 t 568
2015-05-22 13:41:29 C 20 29 41.550 -10 19 02.88 t 568
2015-05-29 04:20:15 C 20 40 57.26 -08 43 22.2 t 950
2015-05-29 04:28:37 C 20 40 57.83 -08 43 16.7 t 950
2015-06-11 08:34:48 C 21 04 51.36 -04 50 48.0 o 291
2015-06-11 08:58:31 C 21 04 53.21 -04 50 28.5 o 291
2015-06-11 09:22:16 C 21 04 55.03 -04 50 08.0 o 291
2015-06-11 13:32:15 C 21 05 14.910 -04 46 34.42 t 568
2015-06-11 13:42:00 C 21 05 15.665 -04 46 26.21 t 568
2016-01-09 10:44:50 C 08 53 21.347 +04 36 09.58 L F51
2016-01-09 11:05:11 C 08 53 19.841 +04 36 15.58 L F51
2016-01-09 11:25:33 C 08 53 18.311 +04 36 21.84 L F51
2019-07-04 12:59:12 C 22 12 01.765 +06 12 43.70 U F52
2019-07-04 13:16:50 C 22 12 04.020 +06 13 09.93 U F52
2019-07-04 13:34:30 C 22 12 06.291 +06 13 36.68 U F52
2019-07-04 13:52:20 C 22 12 08.581 +06 14 03.65 U F52
2019-08-05 01:02:43 C 01 26 29.30 +32 54 09.5 V C95
2019-08-05 01:50:27 C 01 26 50.11 +32 55 44.2 V C95
2019-08-05 02:38:53 C 01 27 11.39 +32 57 19.6 V C95
2019-12-28 11:44:18 C 09 04 24.395 +03 51 07.46 U F51
2019-12-28 12:16:18 C 09 04 22.375 +03 51 12.65 U F51
2019-12-28 12:32:29 C 09 04 21.335 +03 51 14.88 U F51
2023-06-24 08:13:13 C 21 55 20.92 +01 46 14.0 u H21
2023-06-24 08:34:47 C 21 55 23.36 +01 46 39.3 u H21
2023-07-30 13:44:03 C 01 03 13.640 +28 38 17.04 X F52
2023-07-30 13:59:40 C 01 03 19.483 +28 38 49.28 X F52
2023-07-30 14:31:14 C 01 03 31.287 +28 39 54.28 X F52
2024-01-07 12:42:39 C 08 56 11.507 +04 26 39.38 X F51
2024-01-07 12:59:03 C 08 56 10.332 +04 26 43.81 X F51
2024-01-07 13:31:54 C 08 56 07.976 +04 26 52.55 X F51