2018 XB4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1994685441 ± 7.31e-07
Semi-major axis (a)1.0713882173 AU ± 4.88e-07
Inclination (i)8.72636507° ± 3.52e-05
Long. of Asc. Node (Ω)92.01760180° ± 1.78e-05
Arg. of Perihelion (ω)92.36459065° ± 3.39e-05
Mean Anomaly (M)9.15607292° ± 1.42e-03
Mean Motion (n)0.8887753016°/day ± 6.07e-07
Perihelion dist (q)0.85767997 AU ± 8.75e-07
Aphelion dist (Q)1.28509647 AU ± 9.78e-07
Orbital Period1.10897128 yr ± 7.58e-07
Physical Parameters
H (abs. magnitude)24.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.200″
Uncertainty1
Orbit TypeApollo
MOID0.001645 AU
Observations Used66
Oppositions1
Arc Total2018-2019
First Observation Used2018-12-13
Last Observation Used2019-06-08
Observations (71)
Date Type RA Dec Mag Band Observatory
2018-12-13 08:14:45 C 03 39 28.557 -00 00 21.97 U F51
2018-12-13 08:34:26 C 03 39 23.994 +00 00 07.51 U F51
2018-12-13 08:54:10 C 03 39 19.423 +00 00 37.15 U F51
2018-12-13 09:13:52 C 03 39 14.850 +00 01 06.80 U F51
2018-12-14 04:01:14 C 03 35 15.03 +00 29 47.3 o 691
2018-12-14 04:06:27 C 03 35 13.82 +00 29 55.3 o 691
2018-12-14 04:11:39 C 03 35 12.56 +00 30 03.3 o 691
2018-12-14 04:20:34 C 03 35 10.49 +00 30 16.4 V I52
2018-12-14 04:21:41 C 03 35 10.22 +00 30 18.7 V I52
2018-12-14 04:23:49 C 03 35 09.72 +00 30 21.7 V I52
2018-12-14 04:24:55 C 03 35 09.46 +00 30 23.9 V I52
2018-12-14 07:27:27 C 03 34 29.975 +00 35 25.68 V 568
2018-12-14 07:28:52 C 03 34 29.659 +00 35 27.70 V 568
2018-12-14 07:30:14 C 03 34 29.317 +00 35 30.10 V 568
2018-12-14 08:30:41 C 03 34 15.030 +00 37 05.80 V 568
2018-12-14 08:32:02 C 03 34 14.696 +00 37 08.01 V 568
2018-12-14 19:33:37 C 03 31 52.02 +00 54 21.5 V L01
2018-12-14 19:38:06 C 03 31 50.98 +00 54 28.9 V L01
2018-12-14 19:45:24 C 03 31 49.27 +00 54 41.0 V L01
2018-12-14 23:35:51 C 03 30 55.78 +01 00 55.8 V 204
2018-12-14 23:57:47 C 03 30 50.69 +01 01 32.3 V 204
2018-12-16 07:21:40 C 03 23 52.87 +01 54 50.9 o 291
2018-12-16 07:23:25 C 03 23 52.47 +01 54 53.9 o 291
2018-12-21 03:49:03 C 02 57 04.48 +05 38 18.8 o 691
2018-12-21 04:09:07 C 02 56 59.35 +05 38 59.9 o 691
2018-12-23 03:29:04 C 02 45 44.81 +07 20 00.0 o 695
2018-12-23 03:34:50 C 02 45 43.32 +07 20 12.5 o 695
2018-12-23 03:40:38 C 02 45 41.82 +07 20 25.3 o 695
2018-12-25 03:35:26 C 02 34 11.27 +09 07 10.7 o 291
2018-12-25 03:42:22 C 02 34 09.47 +09 07 26.6 o 291
2018-12-25 03:49:22 C 02 34 07.64 +09 07 42.7 o 291
2018-12-30 06:02:46 C 02 04 31.45 +13 52 37.9 o 291
2018-12-30 06:15:47 C 02 04 28.10 +13 53 07.6 o 291
2018-12-30 06:28:52 C 02 04 24.79 +13 53 37.7 o 291
2018-12-31 03:13:58 C 01 59 27.61 +14 42 56.1 o 691
2018-12-31 03:28:24 C 01 59 23.89 +14 43 29.5 o 691
2019-01-03 07:28:20 C 01 41 07.124 +17 43 08.91 V T12
2019-01-03 07:30:27 C 01 41 06.597 +17 43 13.55 V T12
2019-01-04 06:10:18 C 01 35 41.10 +18 35 42.5 o 291
2019-01-04 06:14:55 C 01 35 39.95 +18 35 52.6 o 291
2019-01-04 06:19:33 C 01 35 38.80 +18 36 03.3 o 291
2019-01-04 06:51:19 C 01 35 33.265 +18 37 42.36 V F51
2019-01-06 20:00:43 C 01 21 05.075 +20 57 39.66 V J04
2019-01-06 20:16:46 C 01 21 00.932 +20 58 15.85 V J04
2019-01-07 05:56:55 C 01 18 40.80 +21 19 40.6 o 291
2019-01-07 06:04:54 C 01 18 38.84 +21 19 57.5 o 291
2019-01-08 03:55:25 C 01 13 31.88 +22 08 42.5 o 291
2019-01-08 04:02:00 C 01 13 30.17 +22 08 56.4 o 291
2019-01-09 03:35:37 C 01 07 58.38 +23 00 30.9 o 291
2019-01-09 03:44:27 C 01 07 56.15 +23 00 49.5 o 291