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
2016-04-04 08:16:52 C 09 20 50.288 +09 47 44.33 L F51
2016-04-04 08:33:24 C 09 20 49.955 +09 47 44.86 L F51
2016-04-04 08:49:50 C 09 20 49.618 +09 47 45.58 L F51
2016-04-04 09:06:15 C 09 20 49.263 +09 47 45.72 L F51
2017-05-08 14:15:55 C 11 18 08.33 -77 31 06.6 v Q62
2017-05-08 14:25:22 C 11 18 02.24 -77 31 08.6 v Q62
2017-05-08 14:34:21 C 11 17 56.59 -77 31 10.4 v Q62
2017-05-31 14:05:56 S 07 08 10.39 -65 52 05.8 L C51
2017-05-31 17:14:26 S 07 07 29.82 -65 44 51.3 L C51
2017-05-31 17:14:37 S 07 07 29.74 -65 44 51.1 L C51
2017-05-31 20:23:07 S 07 06 49.40 -65 37 34.9 L C51
2017-05-31 23:31:37 S 07 06 09.40 -65 30 17.2 L C51
2017-09-30 11:29:43 C 08 50 13.61 +42 00 59.7 q 703
2017-09-30 11:37:04 C 08 50 14.27 +42 00 58.7 q 703
2017-09-30 11:45:47 C 08 50 14.95 +42 00 57.6 q 703
2017-09-30 11:55:58 C 08 50 15.87 +42 00 56.1 q 703
2017-10-03 10:35:01 C 08 56 16.18 +41 51 50.2 q 703
2017-10-03 10:42:12 C 08 56 16.75 +41 51 49.6 q 703
2017-10-03 10:49:24 C 08 56 17.29 +41 51 49.1 q 703
2017-10-03 10:56:36 C 08 56 17.92 +41 51 47.4 q 703
2017-10-07 19:43:52 C 09 04 32.09 +41 39 15.6 q D29
2017-10-07 20:01:41 C 09 04 33.37 +41 39 13.4 q D29
2017-10-07 20:19:31 C 09 04 34.70 +41 39 11.3 q D29
2017-10-09 10:42:37 C 09 07 23.80 +41 35 00.1 U 703
2017-10-09 10:49:23 C 09 07 24.28 +41 34 57.8 U 703
2017-10-09 10:56:09 C 09 07 24.78 +41 34 58.2 U 703
2017-10-09 11:10:18 C 09 07 25.78 +41 34 56.1 U 703
2017-10-11 11:49:35 C 09 10 50.69 +41 30 01.9 U G96
2017-10-11 11:55:45 C 09 10 51.09 +41 30 01.3 U G96
2017-10-11 12:01:54 C 09 10 51.50 +41 30 01.0 U G96
2017-10-11 12:08:02 C 09 10 51.90 +41 30 00.4 U G96
2017-10-22 10:32:55 C 09 26 16.42 +41 13 31.2 U 703
2017-10-22 10:47:37 C 09 26 17.38 +41 13 33.3 U 703
2017-10-22 10:54:54 C 09 26 17.74 +41 13 32.5 U 703
2017-10-25 11:57:58 C 09 29 38.93 +41 12 40.8 U 703
2017-10-25 12:04:42 C 09 29 39.21 +41 12 40.6 U 703
2017-10-25 12:11:22 C 09 29 39.50 +41 12 40.9 U 703
2017-10-25 12:17:59 C 09 29 39.75 +41 12 40.7 U 703
2017-10-31 11:31:24 C 09 35 00.00 +41 16 25.0 U G96
2017-10-31 11:38:48 C 09 35 00.22 +41 16 25.5 U G96
2017-10-31 11:46:12 C 09 35 00.43 +41 16 26.0 U G96
2017-10-31 11:53:34 C 09 35 00.66 +41 16 26.4 U G96
2017-12-13 08:31:35 C 09 12 41.69 +45 06 13.6 U 703
2017-12-13 08:39:19 C 09 12 41.00 +45 06 15.6 U 703
2017-12-13 08:47:02 C 09 12 40.39 +45 06 18.9 U 703
2017-12-13 08:54:45 C 09 12 39.77 +45 06 21.2 U 703
2017-12-13 14:18:52 C 09 12 12.06 +45 07 54.4 U T05
2017-12-13 14:31:31 C 09 12 10.91 +45 07 57.4 U T05
2017-12-13 14:44:17 C 09 12 09.84 +45 08 01.1 U T05
2017-12-13 14:57:03 C 09 12 08.76 +45 08 05.4 U T05