8507 (1991 CB1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5947797394 ± 1.74e-08
Semi-major axis (a)1.6873346431 AU ± 1.37e-09
Inclination (i)14.60088631° ± 2.63e-06
Long. of Asc. Node (Ω)317.36128812° ± 1.25e-05
Arg. of Perihelion (ω)345.84290119° ± 1.30e-05
Mean Anomaly (M)189.18650153° ± 3.15e-06
Mean Motion (n)0.4496871125°/day ± 5.47e-10
Perihelion dist (q)0.68374218 AU ± 2.94e-08
Aphelion dist (Q)2.69092710 AU ± 2.95e-08
Orbital Period2.19180460 yr ± 2.67e-09
Physical Parameters
H (abs. magnitude)17.22
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.331″
Uncertainty0
Orbit TypeApollo
MOID0.221029 AU
Observations Used772
Oppositions19
Arc Total1991-2026
First Observation Used1991-02-15
Last Observation Used2026-03-23
Observations (807)
Date Type RA Dec Mag Band Observatory
1998-04-04 17:04:57 C 15 52 59.96 -70 05 10.4 426
1998-04-04 17:20:11 C 15 53 06.93 -70 06 05.5 426
1998-04-04 17:28:00 C 15 53 10.57 -70 06 34.2 426
2000-11-09 05:42:12 C 02 28 24.80 +66 23 00.3 18.3 c 704
2000-11-09 06:09:06 C 02 28 20.86 +66 22 07.1 18.3 c 704
2000-11-09 06:35:53 C 02 28 16.59 +66 21 13.7 17.8 c 704
2000-11-09 07:02:07 C 02 28 12.60 +66 20 22.1 18.0 c 704
2000-11-09 07:36:49 C 02 28 07.07 +66 19 13.2 17.9 c 704
2000-11-09 17:11:11 C 02 26 49.30 +66 00 14.2 118
2000-11-09 17:14:52 C 02 26 48.79 +66 00 07.3 118
2000-11-09 17:18:22 C 02 26 48.33 +66 00 00.7 118
2000-11-16 05:10:35 C 02 11 05.63 +61 00 22.8 c 704
2000-11-16 05:32:05 C 02 11 03.84 +60 59 42.4 c 704
2000-11-16 05:53:43 C 02 11 02.14 +60 59 01.6 c 704
2000-11-16 06:15:14 C 02 11 00.44 +60 58 20.6 c 704
2000-11-16 06:36:44 C 02 10 58.76 +60 57 39.8 c 704
2000-12-07 05:08:16 C 02 02 23.91 +47 40 06.9 17.7 c 704
2000-12-07 05:52:33 C 02 02 24.38 +47 39 09.3 18.3 c 704
2000-12-07 06:15:00 C 02 02 24.71 +47 38 41.0 18.1 c 704
2000-12-07 06:37:09 C 02 02 24.91 +47 38 12.3 18.2 c 704
2000-12-17 03:54:06 C 02 08 32.02 +43 12 04.0 19.4 c 704
2000-12-17 04:16:07 C 02 08 32.79 +43 11 42.3 19.5 c 704
2000-12-17 04:38:04 C 02 08 33.39 +43 11 19.7 19.3 c 704
2000-12-17 04:59:53 C 02 08 33.99 +43 10 58.1 18.7 c 704
2002-02-11 07:40:50 C 09 47 01.84 +10 15 46.6 20.4 c 704
2002-02-11 08:01:20 C 09 47 00.40 +10 15 49.7 20.1 c 704
2002-02-11 08:21:51 C 09 46 58.94 +10 15 52.7 20.7 c 704
2002-02-11 08:42:24 C 09 46 57.61 +10 15 54.6 20.6 c 704
2004-01-30 06:41:18 C 09 04 42.46 +19 11 30.1 c 691
2004-01-30 07:43:41 C 09 04 38.30 +19 11 38.3 c 691
2004-01-30 08:22:52 C 09 04 35.66 +19 11 43.5 c 691
2004-03-18 05:11:36 C 08 05 37.371 +19 50 33.76 e 645
2004-03-18 05:16:36 C 08 05 37.255 +19 50 33.42 22.5 e 645
2011-02-12 09:39:03 C 11 34 32.30 -09 01 53.8 r 703
2011-02-12 09:52:56 C 11 34 31.72 -09 01 58.6 r 703
2011-02-12 10:06:54 C 11 34 31.11 -09 02 01.4 r 703
2011-02-12 10:20:51 C 11 34 30.39 -09 02 08.0 r 703
2011-03-09 17:01:39 C 10 50 56.41 -10 12 51.6 o 300
2011-03-09 17:04:01 C 10 50 56.12 -10 12 50.4 o 300
2011-03-09 17:06:25 C 10 50 55.98 -10 12 50.1 o 300
2011-03-09 17:08:46 C 10 50 55.73 -10 12 49.4 o 300
2011-03-09 17:11:11 C 10 50 55.49 -10 12 50.3 o 300
2011-03-09 17:13:35 C 10 50 55.21 -10 12 49.6 o 300
2011-03-26 05:39:26 C 10 12 23.32 -09 17 50.1 r 703
2011-03-26 05:49:22 C 10 12 22.28 -09 17 48.4 r 703
2011-03-26 05:59:15 C 10 12 21.38 -09 17 46.5 r 703
2011-03-26 06:09:15 C 10 12 20.37 -09 17 43.8 r 703
2011-04-01 03:19:58 C 09 59 27.81 -08 42 51.7 r 703
2011-04-01 03:27:18 C 09 59 27.16 -08 42 50.3 r 703
2011-04-01 03:34:37 C 09 59 26.48 -08 42 48.6 r 703