21088 Chelyabinsk (1992 BL2)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2387361539 ± 6.03e-09
Semi-major axis (a)1.7063669522 AU ± 3.31e-10
Inclination (i)38.46248793° ± 9.84e-07
Long. of Asc. Node (Ω)297.82517282° ± 9.53e-07
Arg. of Perihelion (ω)27.19775356° ± 1.68e-06
Mean Anomaly (M)205.19142502° ± 1.08e-06
Mean Motion (n)0.4421846161°/day ± 1.29e-10
Perihelion dist (q)1.29899547 AU ± 1.03e-08
Aphelion dist (Q)2.11373844 AU ± 1.03e-08
Orbital Period2.22899270 yr ± 6.48e-10
Physical Parameters
H (abs. magnitude)14.34
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.228″
Uncertainty0
Orbit TypeAmor
MOID0.306089 AU
Observations Used6935
Gaia Obs Used131
Oppositions15
Arc Total1990-2026
First Observation Used1990-01-30
Last Observation Used2026-01-13
Observations (9404)
Date Type RA Dec Mag Band Observatory
2008-06-30 08:05:04 C 10 18 18.90 -33 18 00.5 r 432
2008-06-30 08:37:45 C 10 18 21.94 -33 18 01.9 r 432
2008-06-30 08:57:09 C 10 18 23.78 -33 18 02.5 r 432
2008-07-01 08:02:14 C 10 20 36.56 -33 19 03.4 r 432
2008-07-01 08:31:50 C 10 20 39.38 -33 19 04.6 r 432
2008-07-01 09:38:31 C 10 20 45.70 -33 19 06.8 r 432
2008-07-03 08:21:34 C 10 25 18.16 -33 21 33.3 r 432
2008-07-03 09:10:19 C 10 25 22.89 -33 21 35.8 r 432
2008-07-03 09:58:52 C 10 25 27.62 -33 21 38.0 r 432
2008-07-30 08:52:35 C 11 36 13.75 -34 31 26.6 r E12
2008-07-30 09:02:00 C 11 36 14.94 -34 31 28.2 r E12
2008-07-30 09:11:24 C 11 36 15.98 -34 31 28.8 r E12
2008-07-30 09:20:47 C 11 36 17.13 -34 31 30.0 r E12
2009-10-22 11:51:26 C 09 35 50.96 +18 25 25.6 r 703
2009-10-22 11:56:27 C 09 35 51.25 +18 25 21.6 r 703
2009-10-22 12:01:30 C 09 35 51.39 +18 25 19.1 r 703
2009-10-22 12:06:33 C 09 35 51.64 +18 25 15.3 r 703
2009-10-25 11:55:44 C 09 39 08.15 +17 38 58.5 o 691
2009-10-25 12:13:14 C 09 39 08.90 +17 38 47.3 o 691
2009-11-15 10:28:18 C 09 57 00.03 +12 03 45.3 r 703
2009-11-15 10:37:06 C 09 57 00.36 +12 03 38.9 r 703
2009-11-15 10:45:51 C 09 57 00.57 +12 03 33.0 r 703
2009-11-15 10:54:33 C 09 57 00.79 +12 03 26.6 r 703
2009-11-17 02:11:38 C 09 57 59.46 +11 36 20.2 r B67
2009-11-17 02:21:51 C 09 57 59.68 +11 36 12.9 r B67
2009-11-17 02:32:02 C 09 57 59.93 +11 36 05.8 r B67
2009-11-20 11:47:40 C 09 59 47.84 +10 39 40.9 o 691
2009-11-20 12:14:30 C 09 59 48.35 +10 39 22.1 o 691
2009-11-20 12:41:22 C 09 59 48.86 +10 39 03.4 o 691
2009-11-23 12:10:05 C 10 01 08.25 +09 48 53.4 r 683
2009-11-23 12:29:39 C 10 01 08.55 +09 48 42.2 r 683
2009-11-23 12:49:10 C 10 01 08.88 +09 48 27.3 r 683
2009-12-09 12:42:38 C 10 03 35.81 +05 11 00.3 568
2009-12-09 12:46:27 C 10 03 35.78 +05 10 57.5 568
2009-12-14 08:23:53 C 10 02 34.94 +03 44 52.7 17.9 c 704
2009-12-14 08:42:20 C 10 02 34.68 +03 44 38.8 18.2 c 704
2009-12-14 09:00:53 C 10 02 34.42 +03 44 25.0 18.3 c 704
2009-12-14 09:19:20 C 10 02 34.18 +03 44 11.2 18.5 c 704
2009-12-14 09:37:47 C 10 02 33.90 +03 43 57.3 18.4 c 704
2009-12-18 09:25:21 C 10 01 00.94 +02 31 59.4 18.5 c 704
2009-12-18 09:43:29 C 10 01 00.61 +02 31 46.2 18.6 c 704
2009-12-18 10:01:37 C 10 01 00.19 +02 31 32.2 18.7 c 704
2009-12-18 10:19:43 C 10 00 59.88 +02 31 18.5 18.7 c 704
2009-12-18 10:37:52 C 10 00 59.44 +02 31 05.0 18.7 c 704
2009-12-19 10:48:12 C 10 00 29.82 +02 12 51.9 t 568
2009-12-19 13:04:08 C 10 00 26.70 +02 11 09.0 t 568
2010-01-24 15:18:21 C 09 13 25.36 -08 01 07.4 r E12
2010-01-24 15:32:48 C 09 13 24.13 -08 01 15.4 r E12
2010-01-24 15:47:17 C 09 13 22.90 -08 01 23.6 r E12
2010-01-24 16:01:45 C 09 13 21.70 -08 01 31.7 r E12