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
1991-02-15 05:29:50 A 09 26 26.40 +12 54 44.2 D 691
1991-02-15 06:00:19 A 09 26 24.27 +12 54 48.0 D 691
1991-02-15 06:38:07 A 09 26 21.59 +12 54 54.0 D 691
1991-02-16 09:05:12 A 09 24 32.36 +12 58 47.8 D 691
1991-02-16 09:12:34 A 09 24 31.84 +12 58 49.0 D 691
1991-02-17 06:11:00 A 09 23 05.77 +13 01 53.1 D 691
1991-02-17 06:27:08 A 09 23 04.60 +13 01 54.8 D 691
1991-02-17 06:44:05 A 09 23 03.41 +13 01 58.0 D 691
1991-02-20 05:52:52 A 09 18 12.48 +13 12 04.3 D 691
1991-02-20 06:08:09 A 09 18 11.39 +13 12 06.2 D 691
1991-02-20 06:24:02 A 09 18 10.33 +13 12 08.7 D 691
1991-02-22 06:01:13 C 09 14 58.15 +13 18 38.8 a 691
1991-02-22 06:18:06 C 09 14 57.00 +13 18 41.1 a 691
1991-02-22 06:33:34 C 09 14 55.99 +13 18 43.0 a 691
1993-01-26 08:04:57 c 08 56 29.92 +20 53 46.6 i 691
1993-01-26 08:55:14 c 08 56 26.50 +20 53 53.4 i 691
1993-01-26 09:44:13 c 08 56 23.35 +20 54 02.8 i 691
1993-01-29 09:06:40 c 08 51 39.00 +21 02 44.5 i 691
1993-01-29 09:33:54 c 08 51 37.16 +21 02 47.1 i 691
1993-02-26 05:22:33 c 08 11 13.91 +21 38 04.5 i 691
1993-02-26 05:35:00 c 08 11 13.21 +21 38 04.7 i 691
1993-02-26 05:53:29 c 08 11 12.26 +21 38 04.5 i 691
1996-11-18 10:48:07 c 08 22 59.55 +32 33 31.4 i 691
1996-11-18 11:41:56 c 08 22 58.84 +32 33 37.2 i 691
1996-12-02 12:29:03 c 08 13 32.36 +33 29 09.8 i 691
1996-12-02 12:35:41 c 08 13 32.07 +33 29 10.8 i 691
1996-12-02 13:04:03 c 08 13 30.94 +33 29 15.6 i 691
1996-12-06 11:13:13 C 08 09 16.28 +33 46 07.7 i 711
1996-12-06 11:32:18 C 08 09 15.30 +33 46 11.5 i 711
1997-01-01 11:27:12 c 07 26 38.83 +35 00 50.7 i 691
1997-01-01 11:40:55 c 07 26 37.78 +35 00 49.9 i 691
1997-01-01 11:53:53 c 07 26 36.66 +35 00 50.8 i 691
1997-01-17 05:20:20 C 06 57 03.66 +34 37 21.9 a 691
1997-01-17 05:46:36 C 06 57 01.72 +34 37 18.5 a 691
1997-01-17 06:08:40 C 06 57 00.09 +34 37 15.0 a 691
1998-01-28 12:27:13 c 13 19 46.50 -21 11 44.9 i 691
1998-01-28 12:35:31 c 13 19 46.98 -21 11 52.1 i 691
1998-02-24 16:06:05 C 13 55 09.51 -33 03 03.1 426
1998-02-24 16:39:43 C 13 55 11.35 -33 03 49.4 426
1998-02-24 16:58:35 C 13 55 12.29 -33 04 16.0 426
1998-02-25 16:47:20 C 13 56 33.07 -33 37 38.2 426
1998-02-25 16:56:16 C 13 56 33.57 -33 37 49.7 426
1998-02-25 17:04:58 C 13 56 34.06 -33 38 02.3 426
1998-03-02 19:11:29 C 14 03 38.75 -36 41 15.1 360
1998-03-02 19:17:44 C 14 03 39.15 -36 41 25.5 360
1998-03-02 19:23:59 C 14 03 39.45 -36 41 35.3 360
1998-03-27 17:56:24 C 14 58 07.33 -59 10 15.6 426
1998-03-27 17:59:42 C 14 58 07.89 -59 10 25.5 426
1998-03-27 18:03:42 C 14 58 08.57 -59 10 38.1 426
1998-03-27 18:08:40 C 14 58 09.38 -59 10 53.4 426