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
2011-08-09 06:57:07 C 21 34 28.61 +35 31 44.6 18.6 c 704
2011-08-09 07:14:27 C 21 34 31.95 +35 33 25.8 19.0 c 704
2011-08-09 07:31:47 C 21 34 35.20 +35 35 06.1 18.9 c 704
2011-08-09 07:49:06 C 21 34 38.53 +35 36 45.5 18.9 c 704
2011-08-09 20:56:55 C 21 37 32.56 +36 53 47.1 t 204
2011-08-09 21:49:16 C 21 37 43.75 +36 59 04.5 t 204
2011-08-09 22:01:45 C 21 37 46.42 +37 00 20.2 t 204
2011-08-10 02:25:11 C 21 38 48.70 +37 26 48.0 t H21
2011-08-10 02:34:55 C 21 38 50.91 +37 27 47.5 t H21
2011-08-10 02:43:20 C 21 38 52.79 +37 28 39.6 t H21
2011-08-11 02:35:59 C 21 44 51.87 +39 58 09.2 o H21
2011-08-11 02:40:02 C 21 44 52.90 +39 58 35.9 o H21
2011-08-11 02:45:01 C 21 44 54.20 +39 59 08.7 o H21
2011-08-11 02:51:13 C 21 44 55.82 +39 59 49.3 o H21
2011-08-11 03:02:56 C 21 44 58.82 +40 01 06.1 o H21
2011-08-11 12:51:32 C 21 47 42.23 +41 05 16.8 o 300
2011-08-11 12:52:56 C 21 47 42.66 +41 05 26.3 o 300
2011-08-11 13:02:02 C 21 47 45.08 +41 06 26.6 o 300
2011-08-11 13:03:25 C 21 47 45.47 +41 06 36.4 o 300
2011-08-12 03:48:14 C 21 52 11.70 +42 45 34.2 t H21
2011-08-12 03:59:04 C 21 52 14.92 +42 46 49.0 t H21
2011-08-12 04:09:51 C 21 52 18.13 +42 48 03.7 t H21
2011-08-12 13:47:09 C 21 55 26.43 +43 54 37.2 o 300
2011-08-12 13:51:22 C 21 55 27.81 +43 55 07.0 o 300
2011-08-12 14:21:22 C 21 55 37.28 +43 58 38.0 o 300
2011-08-12 14:22:44 C 21 55 37.74 +43 58 48.0 o 300
2011-08-14 20:55:20 C 22 18 11.85 +50 38 26.3 u J95
2011-08-14 21:02:08 C 22 18 15.13 +50 39 19.3 u J95
2011-08-14 21:13:49 C 22 18 20.95 +50 40 49.6 u J95
2011-08-15 07:32:33 C 22 23 40.21 +52 00 34.8 o H21
2011-08-15 07:40:46 C 22 23 44.48 +52 01 37.8 o H21
2011-08-15 07:45:01 C 22 23 46.67 +52 02 10.9 o H21
2011-08-16 02:57:35 C 22 35 16.63 +54 31 12.5 o H21
2011-08-16 03:06:15 C 22 35 22.03 +54 32 21.8 o H21
2011-08-16 03:14:02 C 22 35 26.93 +54 33 24.4 o H21
2011-08-16 03:17:36 C 22 35 29.16 +54 33 52.6 o H21
2011-08-17 04:48:21 C 22 53 49.41 +57 52 43.8 t G56
2011-08-17 04:52:58 C 22 53 52.80 +57 53 22.2 t G56
2011-08-17 04:57:33 C 22 53 56.75 +57 53 57.0 t G56
2011-08-17 05:11:54 C 22 54 07.93 +57 55 53.0 t G56
2011-08-17 05:58:35 C 22 54 40.93 +58 02 18.1 o H21
2011-08-17 06:06:30 C 22 54 47.08 +58 03 20.1 o H21
2011-08-17 06:14:26 C 22 54 53.26 +58 04 21.9 o H21
2011-08-17 06:22:38 C 22 54 59.65 +58 05 25.5 o H21
2011-08-17 06:54:54 C 22 55 25.95 +58 09 36.8 u H36
2011-08-17 07:21:01 C 22 55 46.50 +58 13 00.3 u H36
2011-08-17 07:27:33 C 22 55 51.51 +58 13 49.5 u H36
2011-08-17 07:34:07 C 22 55 56.67 +58 14 41.0 u H36
2011-08-19 22:33:44 C 00 05 33.85 +65 43 20.7 u J95
2011-08-19 22:38:33 C 00 05 40.71 +65 43 51.0 u J95