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
2019-01-09 03:53:19 C 01 07 53.93 +23 01 08.1 o 291
2019-01-09 04:57:29 C 01 07 40.947 +23 03 49.22 V T12
2019-01-09 05:01:29 C 01 07 39.915 +23 03 57.83 V T12
2019-01-11 00:36:33 C 00 57 26.79 +24 36 13.0 u H21
2019-01-11 00:49:16 C 00 57 23.60 +24 36 39.3 u H21
2019-01-11 05:30:22 C 00 56 14.69 +24 46 18.4 o 291
2019-01-11 05:41:03 C 00 56 14.408 +24 47 11.72 V T12
2019-01-11 05:41:42 C 00 56 11.99 +24 46 40.8 o 291
2019-01-11 05:44:40 C 00 56 13.488 +24 47 18.98 V T12
2019-01-11 05:53:10 C 00 56 09.22 +24 47 02.8 o 291
2019-01-15 05:34:12 C 00 33 45.582 +27 56 14.13 V T12
2019-01-15 05:38:59 C 00 33 44.369 +27 56 22.57 V T12
2019-01-17 05:43:51 C 00 22 23.874 +29 22 42.60 V T12
2019-01-24 02:24:48 C 23 42 51.50 +33 25 32.2 o 291
2019-01-24 02:43:36 C 23 42 46.67 +33 25 51.8 o 291
2019-01-24 03:02:28 C 23 42 41.85 +33 26 11.6 o 291
2019-04-11 09:34:42 C 21 19 19.538 +05 12 35.67 V 309
2019-05-10 09:18:12 C 22 29 49.091 -01 48 04.52 V 309
2019-05-10 09:25:45 C 22 29 49.861 -01 48 07.63 V 309
2019-05-10 09:33:31 C 22 29 50.671 -01 48 10.70 V 309
2019-06-08 08:30:00 C 23 43 14.224 -05 23 59.06 V 309