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
1900-12-24 17:39:25 M 23 02 15.27 -22 09 30.4 p 538
1900-12-24 18:01:16 M 23 02 21.06 -22 10 00.8 p 030
1900-12-24 18:03:46 M 23 02 21.65 -22 09 45.6 p 538
1900-12-25 02:27:10 A 23 04 28.0 -22 12 39 662
1900-12-25 17:38:01 M 23 08 16.86 -22 17 07.1 p 016
1900-12-25 17:49:35 M 23 08 20.12 -22 17 07.4 p 030
1900-12-25 18:07:04 M 23 08 24.95 -22 16 57.1 p 538
1900-12-25 18:09:40 M 23 08 24.84 -22 17 13.2 p 016
1900-12-26 18:06:33 M 23 14 25.34 -22 23 28.8 p 030
1900-12-26 19:20:23 A 23 14 43.2 -22 23 44 020
1900-12-26 19:39:24 M 23 14 47.84 -22 23 40.8 p 051
1900-12-27 03:04:16 A 23 16 38.6 -22 25 33 662
1900-12-28 19:59:58 M 23 26 48.41 -22 33 22.1 p 051
1900-12-29 02:52:28 A 23 28 30.7 -22 34 42 662
1900-12-29 20:33:06 M 23 32 51.85 -22 36 54.2 p 051
1901-01-10 17:55:04 M 00 39 42.66 -22 15 05.6 p 016
1901-01-10 18:09:38 A 00 39 45.60 -22 15 10.7 024
1901-01-10 18:23:25 M 00 39 48.75 -22 14 58.7 p 016
1901-01-11 18:10:03 M 00 45 02.09 -22 08 25.0 p 030
1901-01-12 17:49:21 M 00 50 10.69 -22 01 20.4 p 030
1901-01-12 18:01:28 M 00 50 12.46 -22 01 17.2 p 016
1901-01-14 17:43:41 A 01 00 22.49 -21 45 12.8 024
1901-01-14 18:09:22 M 01 00 28.90 -21 45 02.2 p 030
1901-01-15 18:28:00 M 01 05 33.99 -21 35 53.9 p 016
1901-01-16 18:36:57 M 01 10 33.00 -21 26 27.2 p 024
1901-01-17 18:20:13 M 01 15 24.47 -21 16 23.0 p 016
1901-01-17 18:25:39 A 01 15 24.36 -21 16 24.5 024
1901-01-18 18:03:29 A 01 20 12.30 -21 05 54.5 024
1901-01-18 18:20:07 M 01 20 14.93 -21 05 55.2 p 016
1901-01-23 18:16:35 M 01 43 32.41 -20 07 22.4 p 016
1901-01-23 18:29:53 M 01 43 34.59 -20 07 19.6 p 522
1913-10-24 18:26:55 M 18 50 29.56 -05 17 18.9 q 029
1913-10-24 18:53:06 M 18 50 34.30 -05 18 q 029
1913-10-24 19:59:28 M 18 50 47.21 -05 20 48.3 q 015
1913-10-25 17:47:11 M 18 54 57.98 -06 08 52.3 q 015
1913-10-25 18:40:46 M 18 55 08.40 -06 10 53.2 q 029
1913-10-25 19:14:20 M 18 55 14.70 -06 12 04.5 q 016
1913-10-25 19:16:57 M 18 55 15.17 -06 12 12.8 q 029
1913-10-25 19:18:34 M 18 55 15.48 -06 12 16.6 q 029
1913-10-27 17:57:03 M 19 04 31.92 -07 58 06.6 q 016
1913-10-27 18:30:23 M 19 04 38.46 -07 59 23.7 q 016
1913-10-27 18:41:22 M 19 04 40.83 -07 59 45.7 q 029
1913-10-27 18:55:17 M 19 04 43.62 -08 00 19.9 q 029
1913-10-28 17:37:01 M 19 09 24.04 -08 53 10.9 q 015
1913-10-28 18:15:33 N 19 09 31.72 -08 54 43.9 q 029
1913-10-29 15:16:22 N 19 13 59.58 -09 43 44.6 q 136
1913-10-29 17:33:19 M 19 14 26.12 -09 49 37.1 q 015
1913-10-29 19:29:49 M 19 14 50.57 -09 54 15.2 q 029
1913-10-29 19:43:39 M 19 14 53.58 -09 54 44.0 q 029
1913-10-30 18:10:50 M 19 19 44.60 -10 48 30.9 q 016