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
2000-02-10 16:13:03 C 10 46 26.39 +00 09 29.0 413
2000-02-10 16:18:11 C 10 46 26.16 +00 09 29.7 413
2000-02-26 11:58:29 C 10 27 10.73 +00 54 22.1 413
2000-02-26 12:02:54 C 10 27 10.48 +00 54 22.8 413
2000-02-26 12:07:44 C 10 27 10.23 +00 54 23.2 413
2000-02-27 08:13:29 C 10 26 06.44 +00 57 19.0 693
2000-02-27 08:16:09 C 10 26 06.50 +00 57 18.3 693
2001-11-18 09:06:46 C 09 57 54.75 +27 04 26.4 c 696
2001-11-18 09:23:10 C 09 57 54.91 +27 04 25.9 c 696
2002-01-13 08:45:09 C 09 16 18.83 +29 26 06.6 c 711
2002-01-13 08:57:51 C 09 16 17.73 +29 26 08.5 c 711
2002-01-13 09:10:29 C 09 16 16.85 +29 26 09.5 c 711
2002-02-03 08:30:02 C 08 38 40.96 +29 46 34.3 20.6 c 644
2002-02-03 08:44:57 C 08 38 39.85 +29 46 33.6 20.5 c 644
2002-02-03 09:00:07 C 08 38 38.77 +29 46 32.7 20.0 c 644
2003-03-06 08:37:42 C 11 08 15.59 -11 37 36.9 c 711
2003-03-06 08:56:15 C 11 08 14.47 -11 37 34.1 c 711
2003-03-06 09:14:47 C 11 08 13.38 -11 37 31.8 c 711
2005-02-09 05:39:52 C 09 41 32.65 +15 41 07.0 c 711
2005-02-09 05:54:42 C 09 41 31.83 +15 41 07.9 c 711
2005-02-09 06:09:31 C 09 41 30.71 +15 41 09.7 c 711
2005-03-04 05:29:17 C 09 12 01.93 +16 25 52.8 r G96
2005-03-04 05:38:36 C 09 12 01.51 +16 25 54.2 r G96
2005-03-04 05:47:55 C 09 12 01.02 +16 25 53.2 r G96
2005-03-04 05:57:12 C 09 12 00.60 +16 25 53.9 r G96
2005-03-10 04:36:08 C 09 05 56.493 +16 29 46.36 n 645
2005-03-10 04:37:20 C 09 05 56.446 +16 29 46.47 n 645
2005-03-10 04:40:55 C 09 05 56.285 +16 29 46.42 n 645
2005-03-10 05:41:07 C 09 05 53.874 +16 29 47.40 e 645
2005-03-10 05:46:07 C 09 05 53.680 +16 29 47.47 21.98 e 645
2005-04-07 06:48:37 C 08 50 10.45 +16 06 57.1 b 568
2005-04-07 07:49:27 C 08 50 09.94 +16 06 52.3 b 568
2005-04-07 08:59:47 C 08 50 09.38 +16 06 45.7 c 568
2005-04-07 09:05:16 C 08 50 09.31 +16 06 46.1 b 568
2006-03-27 12:38:51 C 11 54 32.07 -31 19 34.2 r E12
2006-03-27 12:52:34 C 11 54 30.88 -31 19 33.6 r E12
2006-03-27 13:07:14 C 11 54 29.66 -31 19 33.0 r E12
2006-03-27 13:21:13 C 11 54 28.51 -31 19 32.5 r E12
2006-05-03 11:38:19 C 10 51 23.04 -26 45 08.0 r E12
2006-05-03 11:53:06 C 10 51 22.39 -26 45 02.9 r E12
2006-05-03 12:07:50 C 10 51 21.63 -26 44 54.4 r E12
2006-05-03 12:22:39 C 10 51 20.95 -26 44 47.9 r E12
2006-05-30 10:51:16 C 10 39 25.34 -22 24 44.4 r E12
2006-05-30 11:06:55 C 10 39 25.41 -22 24 39.6 r E12
2006-05-30 11:22:35 C 10 39 25.63 -22 24 34.6 r E12
2006-05-30 11:38:15 C 10 39 25.56 -22 24 29.9 r E12
2006-07-22 09:15:53 C 11 33 30.92 -21 26 15.9 r E12
2006-07-22 09:23:17 C 11 33 31.32 -21 26 16.1 r E12
2006-07-22 09:30:41 C 11 33 32.00 -21 26 18.9 r E12
2006-07-22 09:38:07 C 11 33 32.58 -21 26 20.7 r E12