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
2007-01-08 03:32:41 C 01 23 30.39 +53 10 42.9 18.7 c 704
2007-01-08 03:50:49 C 01 23 34.70 +53 10 31.1 18.0 c 704
2007-01-08 04:09:01 C 01 23 38.95 +53 10 18.0 18.0 c 704
2007-01-08 04:27:13 C 01 23 43.53 +53 10 06.1 18.1 c 704
2007-02-09 04:22:28 C 03 35 02.27 +44 28 45.5 19.6 c 704
2007-02-09 04:39:22 C 03 35 04.52 +44 28 33.1 19.7 c 704
2007-02-09 04:56:16 C 03 35 06.56 +44 28 24.2 19.4 c 704
2007-02-09 05:13:11 C 03 35 08.67 +44 28 13.4 19.3 c 704
2008-01-11 09:55:20 C 10 57 41.88 +03 33 57.4 o 291
2008-01-11 10:05:51 C 10 57 41.62 +03 33 56.9 o 291
2008-01-11 10:16:12 C 10 57 41.37 +03 33 56.4 o 291
2008-01-12 08:38:46 C 10 57 09.73 +03 33 06.7 o H55
2008-01-12 08:55:39 C 10 57 09.36 +03 33 07.2 o H55
2008-01-12 09:13:16 C 10 57 08.96 +03 33 07.6 o H55
2008-02-02 08:08:00 C 10 39 44.90 +03 44 11.5 o 691
2008-02-13 05:32:43 C 10 27 14.35 +04 09 57.1 o 691
2008-02-13 05:54:33 C 10 27 13.17 +04 10 01.4 o 691
2008-02-13 06:16:24 C 10 27 12.07 +04 10 03.8 o 691
2008-02-13 06:38:07 C 10 27 10.95 +04 10 06.0 o 691
2008-02-13 07:03:32 C 10 27 09.61 +04 10 09.5 o 691
2008-02-13 07:28:57 C 10 27 08.31 +04 10 12.4 o 691
2008-03-11 06:15:44 C 09 54 06.69 +05 41 39.6 r G96
2008-03-11 06:24:27 C 09 54 06.30 +05 41 40.7 r G96
2008-03-11 06:33:09 C 09 54 05.90 +05 41 42.5 r G96
2008-03-11 06:41:57 C 09 54 05.47 +05 41 43.5 r G96
2009-04-18 18:31:15 C 21 31 56.31 -56 12 42.9 r E12
2009-04-18 18:40:46 C 21 31 59.84 -56 12 32.2 r E12
2009-04-18 18:50:18 C 21 32 03.22 -56 12 21.1 r E12
2009-09-17 11:19:26 C 08 29 52.76 +36 32 37.4 r 703
2009-09-17 11:29:11 C 08 29 53.77 +36 32 37.3 r 703
2009-09-17 11:38:57 C 08 29 54.70 +36 32 33.7 r 703
2009-09-17 11:48:44 C 08 29 55.57 +36 32 33.1 r 703
2009-11-29 02:26:53 C 09 47 00.96 +33 38 30.2 20.4 o C20
2009-11-29 02:31:07 C 09 47 00.90 +33 38 30.9 20.2 o C20
2009-12-17 07:20:22 C 09 32 43.69 +35 00 46.8 r 703
2009-12-17 07:26:57 C 09 32 43.44 +35 00 48.7 r 703
2009-12-17 07:33:38 C 09 32 43.11 +35 00 49.3 r 703
2009-12-17 07:40:18 C 09 32 42.61 +35 00 49.2 r 703
2013-01-06 11:00:13 C 10 06 36.84 +18 18 18.6 o 691
2013-01-06 11:25:41 C 10 06 35.85 +18 18 21.2 o 691
2013-01-06 11:51:09 C 10 06 34.72 +18 18 24.8 o 691
2013-01-19 09:39:00 C 09 51 41.57 +18 55 22.5 o 691
2013-01-19 10:04:28 C 09 51 40.18 +18 55 25.7 o 691
2013-01-19 10:29:58 C 09 51 38.76 +18 55 28.3 o 691
2013-02-18 04:34:52 C 09 09 12.38 +20 04 32.9 r G96
2013-02-18 04:49:02 C 09 09 11.55 +20 04 33.9 r G96
2013-02-18 05:03:16 C 09 09 10.69 +20 04 34.5 r G96
2013-02-18 05:17:24 C 09 09 09.90 +20 04 35.0 r G96
2013-04-07 03:26:11 C 08 34 13.65 +19 00 51.2 u G96
2013-04-07 03:33:40 C 08 34 13.62 +19 00 49.7 u G96