1991 XB

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5817870971 ± 1.22e-07
Semi-major axis (a)2.9638463639 AU ± 6.42e-08
Inclination (i)16.23542057° ± 1.69e-05
Long. of Asc. Node (Ω)250.14843880° ± 3.26e-05
Arg. of Perihelion (ω)172.71650721° ± 4.02e-05
Mean Anomaly (M)255.60772389° ± 5.63e-05
Mean Motion (n)0.1931651363°/day ± 6.27e-09
Perihelion dist (q)1.23951879 AU ± 3.61e-07
Aphelion dist (Q)4.68817394 AU ± 3.75e-07
Orbital Period5.10250608 yr ± 1.66e-07
Physical Parameters
H (abs. magnitude)18.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.351″
Uncertainty0
Orbit TypeAmor
MOID0.253648 AU
Observations Used38
Oppositions16
Arc Total1991-2011
First Observation Used1991-10-05
Last Observation Used2011-07-24
Observations (41)
Date Type RA Dec Mag Band Observatory
1991-10-05 07:43:00 01 32 24.23 +50 16 58.0 675
1991-12-01 07:29:14 A 03 40 51.38 +25 20 34.7 16.2 675
1991-12-01 08:15:44 A 03 40 55.59 +25 18 33.3 675
1991-12-03 07:15:44 03 45 32.46 +23 14 22.9 675
1991-12-03 07:24:44 A 03 45 33.21 +23 14 03.2 16.2 675
1991-12-03 08:11:29 A 03 45 37.40 +23 11 59.5 675
1991-12-06 05:35:29 A 03 52 14.78 +20 11 47.0 675
1991-12-06 05:50:14 A 03 52 15.95 +20 11 13.4 16.5 675
1991-12-06 08:57:45 A 03 52 32.01 +20 03 13.1 675
1991-12-13 08:16:44 c 04 07 30.92 +13 22 55.6 i 691
1991-12-13 08:27:11 c 04 07 31.69 +13 22 32.5 i 691
1991-12-15 02:30:37 c 04 11 08.63 +11 52 14.2 i 691
1991-12-15 02:40:32 c 04 11 09.42 +11 51 53.5 i 691
1991-12-20 13:43:37 A 04 21 50.41 +07 42 38.5 413
1991-12-20 13:46:30 A 04 21 50.66 +07 42 33.7 413
1991-12-20 14:05:10 A 04 21 52.08 +07 42 00.6 413
1991-12-20 14:09:04 A 04 21 52.34 +07 41 54.5 413
1991-12-20 14:13:04 A 04 21 52.59 +07 41 46.8 413
1992-01-01 03:46:43 C 04 42 48.84 +01 31 25.0 z 801
1992-01-01 03:57:56 C 04 42 49.50 +01 31 14.2 z 801
1992-01-13 06:28:28 A 05 03 20.84 -01 43 37.0 688
1992-01-13 06:36:07 A 05 03 21.40 -01 43 40.5 688
1992-01-13 12:50:05 C 05 03 47.58 -01 45 52.8 413
1992-01-13 12:53:49 C 05 03 47.82 -01 45 54.4 413
1992-01-13 12:57:55 C 05 03 48.09 -01 45 56.2 413
1992-01-14 12:02:28 C 05 05 24.82 -01 54 48.0 413
1992-01-14 12:05:53 C 05 05 25.05 -01 54 49.3 413
1992-01-15 13:17:04 C 05 07 10.01 -02 03 38.0 413
1992-01-15 13:24:37 C 05 07 10.54 -02 03 40.4 413
1992-02-03 03:07:10 C 05 38 21.42 -02 47 38.1 688
1992-02-03 03:10:45 C 05 38 21.69 -02 47 38.2 688
2001-08-18 05:28:51 C 21 07 21.98 +14 41 14.4 c 644
2001-08-18 05:44:19 C 21 07 21.10 +14 41 14.7 c 644
2001-08-18 05:59:55 C 21 07 20.22 +14 41 15.6 c 644
2007-01-09 01:45:22 C 23 17 32.96 +04 45 56.0 r G96
2007-01-09 01:50:46 C 23 17 33.72 +04 45 57.5 r G96
2007-01-09 01:56:11 C 23 17 34.47 +04 45 58.8 r G96
2007-01-09 02:01:33 C 23 17 35.23 +04 46 01.0 r G96
2011-07-24 05:32:30 C 20 46 47.17 +06 19 40.5 o H21
2011-07-24 05:54:32 C 20 46 46.21 +06 19 44.2 o H21
2011-07-24 06:19:08 C 20 46 45.11 +06 19 47.8 o H21