137078 (1998 XZ4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6379071136 ± 7.58e-09
Semi-major axis (a)1.9385185544 AU ± 1.50e-09
Inclination (i)23.14653620° ± 3.85e-07
Long. of Asc. Node (Ω)324.43101836° ± 3.94e-06
Arg. of Perihelion (ω)9.64010941° ± 4.32e-06
Mean Anomaly (M)29.30107170° ± 2.11e-06
Mean Motion (n)0.3651802931°/day ± 4.24e-10
Perihelion dist (q)0.70192378 AU ± 1.47e-08
Aphelion dist (Q)3.17511333 AU ± 1.49e-08
Orbital Period2.69901279 yr ± 3.14e-09
Physical Parameters
H (abs. magnitude)16.36
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.018″
Uncertainty0
Orbit TypeApollo
MOID0.300990 AU
Observations Used845
Gaia Obs Used132
Oppositions12
Arc Total1998-2017
First Observation Used1998-12-11
Last Observation Used2026-01-08
Observations (933)
Date Type RA Dec Mag Band Observatory
2020-11-25 15:08:01 C 10 10 58.500 +21 53 54.80 U F51
2020-12-15 11:35:21 C 10 08 28.66 +21 54 42.8 V G96
2020-12-15 11:42:49 C 10 08 28.51 +21 54 43.3 V G96
2020-12-15 11:50:21 C 10 08 28.36 +21 54 43.8 V G96
2020-12-15 11:57:55 C 10 08 28.21 +21 54 44.5 V G96
2020-12-26 07:45:10 C 10 01 30.94 +22 16 52.1 V G96
2020-12-26 07:52:34 C 10 01 30.70 +22 16 53.0 V G96
2020-12-26 07:59:55 C 10 01 30.40 +22 16 53.7 V G96
2020-12-26 08:07:18 C 10 01 30.15 +22 16 54.8 V G96
2021-01-08 09:22:47 C 09 47 46.91 +22 56 43.3 V G96
2021-01-08 09:30:11 C 09 47 46.53 +22 56 44.5 V G96
2021-01-08 09:37:35 C 09 47 46.14 +22 56 45.7 V G96
2021-01-11 10:06:18 C 09 43 50.757 +23 06 48.42 U F52
2021-01-11 10:23:19 C 09 43 49.797 +23 06 50.78 U F52
2021-01-11 10:57:06 C 09 43 47.868 +23 06 55.59 U F52
2021-01-16 13:20:45 C 09 36 38.036 +23 23 33.14 U F52
2021-01-16 13:41:11 C 09 36 36.765 +23 23 35.62 U F52
2021-01-16 14:01:33 C 09 36 35.503 +23 23 38.29 U F52
2021-01-16 14:22:00 C 09 36 34.231 +23 23 40.98 U F52
2021-01-23 12:42:29 C 09 26 01.786 +23 44 02.82 U F51
2021-01-23 13:00:17 C 09 26 00.604 +23 44 04.76 U F51
2021-01-23 13:18:10 C 09 25 59.424 +23 44 06.86 U F51
2021-02-05 06:19:31 C 09 05 43.91 +24 08 29.4 V G96
2021-02-05 06:27:36 C 09 05 43.36 +24 08 29.9 V G96
2021-02-05 06:35:41 C 09 05 42.82 +24 08 30.0 V G96
2021-02-05 06:43:45 C 09 05 42.26 +24 08 30.1 V G96
2021-02-06 08:43:35 C 09 04 00.133 +24 09 36.61 U F52
2021-02-06 09:00:06 C 09 03 59.027 +24 09 37.10 U F52
2021-02-06 09:16:37 C 09 03 57.921 +24 09 37.94 U F52
2021-02-06 09:33:08 C 09 03 56.827 +24 09 38.89 U F52
2021-02-09 06:22:54 C 08 59 30.11 +24 11 40.6 V 703
2021-02-09 06:30:26 C 08 59 29.64 +24 11 40.7 V 703
2021-02-09 06:37:59 C 08 59 29.14 +24 11 40.5 V 703
2021-02-09 06:45:31 C 08 59 28.65 +24 11 40.6 V 703
2021-02-12 08:08:08 C 08 54 52.621 +24 12 31.76 U F51
2021-02-12 08:25:50 C 08 54 51.508 +24 12 31.81 U F51
2021-02-12 08:43:26 C 08 54 50.408 +24 12 31.93 U F51
2021-02-12 09:00:59 C 08 54 49.298 +24 12 31.99 U F51
2021-02-18 07:08:57 C 08 46 26.66 +24 10 15.5 V G96
2021-02-18 07:25:14 C 08 46 25.75 +24 10 14.9 V G96
2021-02-18 07:32:43 C 08 46 25.31 +24 10 14.6 V G96
2021-02-18 07:40:13 C 08 46 24.87 +24 10 14.4 V G96
2021-03-05 05:50:03 C 08 29 34.637 +23 44 37.69 U F51
2021-03-05 06:07:56 C 08 29 33.940 +23 44 35.74 U F51
2021-03-05 06:25:51 C 08 29 33.272 +23 44 34.02 U F51
2021-03-11 04:15:42 C 08 24 50.22 +23 28 12.3 V G96
2021-03-11 04:23:55 C 08 24 49.91 +23 28 11.0 V G96
2021-03-11 04:32:07 C 08 24 49.68 +23 28 09.9 V G96
2021-03-11 04:40:17 C 08 24 49.41 +23 28 08.9 V G96
2021-03-18 04:14:01 C 08 20 43.94 +23 05 32.6 V G96