21P

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2026-03-24 (JD 2461123.5)
Eccentricity (e)0.7111070000
Semi-major axis (a)3.4907387856 AU
Inclination (i)32.05900000°
Long. of Asc. Node (Ω)195.29460000°
Arg. of Perihelion (ω)172.93950000°
Mean Anomaly (M)0.00000000°
Mean Motion (n)—°/day
Perihelion dist (q)1.00845000 AU
Aphelion dist (Q)5.97302757 AU
Orbital Period6.52192841 yr
Physical Parameters
H (abs. magnitude)9.00
G (slope)6.00
Orbit Solution
SourceMPC
Solution Date
RMS Residual—″
Uncertainty
Orbit TypeP
MOID0.010867 AU
Observations Used
Oppositions
Arc Total
First Observation Used
Last Observation Used
Observations (7431)
Date Type RA Dec Mag Band Observatory
2011-05-08 23:36:17 C 16 09 33.16 +10 19 49.3 u 198
2011-05-08 23:51:45 C 16 09 32.63 +10 19 56.5 u 198
2011-05-08 23:59:59 C 16 09 32.35 +10 20 00.5 u 198
2011-05-09 00:06:08 C 16 09 32.11 +10 20 03.4 u 198
2011-05-09 00:07:13 C 16 09 32.09 +10 20 03.7 u 198
2011-05-09 00:15:25 C 16 09 31.81 +10 20 07.9 u 198
2011-05-09 00:34:54 C 16 09 31.09 +10 20 17.5 u 198
2011-05-10 22:57:06 C 16 07 50.27 +10 41 59.2 v I93
2011-05-10 23:28:27 C 16 07 49.01 +10 42 14.1 v I93
2011-05-10 23:59:05 C 16 07 47.86 +10 42 28.7 v I93
2011-05-20 22:19:07 C 15 58 23.57 +12 25 13.8 o C10
2011-05-20 22:41:02 C 15 58 22.58 +12 25 21.8 o C10
2011-05-24 06:14:05 C 15 55 01.88 +12 55 39.5 o H10
2011-05-24 06:26:00 C 15 55 01.36 +12 55 43.9 o H10
2011-05-24 06:37:54 C 15 55 00.85 +12 55 48.3 o H10
2011-05-25 00:15:51 C 15 54 15.78 +13 02 11.2 v I93
2011-05-25 00:30:39 C 15 54 15.18 +13 02 16.0 v I93
2011-05-25 00:54:19 C 15 54 14.12 +13 02 25.1 v I93
2011-05-29 22:15:42 C 15 49 11.80 +13 41 39.7 u 585
2011-05-29 22:31:01 C 15 49 11.14 +13 41 44.6 u 585
2011-05-29 22:34:39 C 15 49 10.94 +13 41 46.1 u 585
2011-05-30 04:23:22 C 15 48 56.14 +13 43 34.6 r 850
2011-05-30 05:18:28 C 15 48 53.64 +13 43 52.2 r 850
2011-06-01 22:43:46 C 15 46 04.92 +14 02 57.7 o C10
2011-06-01 23:05:41 C 15 46 03.89 +14 03 03.5 o C10
2011-06-05 07:39:16 C 15 42 37.86 +14 23 56.1 v H10
2011-06-05 07:45:26 C 15 42 37.50 +14 23 57.5 v H10
2011-06-06 12:06:46 C 15 41 26.07 +14 30 38.7 t E07
2011-06-06 12:18:55 C 15 41 25.57 +14 30 41.0 t E07
2011-06-08 05:42:54 C 15 39 41.90 +14 39 33.7 r 850
2011-06-08 06:49:00 C 15 39 39.05 +14 39 46.9 r 850
2011-06-09 23:52:12 C 15 37 57.86 +14 47 48.1 u A77
2011-06-09 23:58:53 C 15 37 57.63 +14 47 50.8 u A77
2011-06-10 00:05:32 C 15 37 57.34 +14 47 51.9 u A77
2011-06-18 22:46:21 C 15 29 42.16 +15 16 44.2 v 204
2011-06-18 23:00:02 C 15 29 41.63 +15 16 45.1 v 204
2011-06-21 00:19:04 C 15 27 57.86 +15 20 16.9 w 213
2011-06-21 00:30:35 C 15 27 57.45 +15 20 17.6 w 213
2011-06-22 21:16:57 C 15 26 27.31 +15 22 29.7 c 442
2011-06-22 21:30:29 C 15 26 26.79 +15 22 29.7 c 442
2011-06-26 00:38:47 C 15 24 04.13 +15 24 06.7 w J38
2011-06-26 00:51:05 C 15 24 03.78 +15 24 06.8 w J38
2011-06-26 00:54:57 C 15 24 03.61 +15 24 06.3 w B54
2011-06-26 00:55:11 C 15 24 03.65 +15 24 06.5 w J38
2011-06-26 00:58:20 C 15 24 03.49 +15 24 07.1 w B54
2011-06-26 01:12:35 C 15 24 03.07 +15 24 07.0 w B54
2011-06-26 04:30:31 C 15 23 57.23 +15 24 07.9 r H10
2011-06-26 04:58:25 C 15 23 56.38 +15 24 08.8 c H06
2011-06-26 05:01:53 C 15 23 56.28 +15 24 08.7 c H06
2011-06-26 05:05:21 C 15 23 56.18 +15 24 08.8 c H06