503861 (1998 WZ1)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5567157211 ± 2.42e-08
Semi-major axis (a)2.1635271160 AU ± 2.31e-09
Inclination (i)4.31270015° ± 3.42e-06
Long. of Asc. Node (Ω)344.81457364° ± 7.22e-05
Arg. of Perihelion (ω)137.40719702° ± 7.27e-05
Mean Anomaly (M)159.57664957° ± 5.49e-06
Mean Motion (n)0.3097196517°/day ± 4.95e-10
Perihelion dist (q)0.95905756 AU ± 5.23e-08
Aphelion dist (Q)3.36799667 AU ± 5.24e-08
Orbital Period3.18231755 yr ± 5.09e-09
Physical Parameters
H (abs. magnitude)19.97
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.368″
Uncertainty0
Orbit TypeApollo
MOID0.022252 AU
Observations Used113
Oppositions14
Arc Total1998-2018
First Observation Used1998-11-17
Last Observation Used2018-05-16
Observations (124)
Date Type RA Dec Mag Band Observatory
1999-05-23 05:40:37 C 13 49 23.39 -20 10 34.8 i 693
2001-10-15 07:02:37 C 23 34 17.83 +00 49 52.4 n 645
2001-10-15 07:03:12 C 23 34 17.82 +00 49 52.4 n 645
2001-10-15 07:07:23 C 23 34 17.53 +00 49 51.1 n 645
2001-10-15 07:07:59 C 23 34 17.51 +00 49 51.1 n 645
2004-10-10 04:06:39 C 22 19 23.294 -09 50 15.47 t 695
2004-10-10 07:16:16 C 22 19 16.831 -09 50 40.42 t 695
2014-12-20 05:31:23 C 13 33 11.74 -07 28 41.4 t J04
2014-12-20 05:43:09 C 13 33 13.42 -07 28 54.7 t J04
2014-12-20 05:54:56 C 13 33 15.15 -07 29 08.4 t J04
2014-12-23 06:03:57 C 13 43 47.62 -08 49 51.0 t J04
2014-12-23 06:15:43 C 13 43 49.30 -08 50 04.7 t J04
2014-12-23 06:27:31 C 13 43 51.02 -08 50 15.7 t J04
2014-12-24 12:46:02 C 13 48 11.88 -09 23 06.5 o 291
2014-12-24 12:57:01 C 13 48 13.37 -09 23 17.8 o 291
2015-05-20 05:20:04 C 15 44 45.55 -28 22 17.5 L W84
2015-05-20 05:24:44 C 15 44 45.22 -28 22 16.3 L W84
2015-05-20 05:29:24 C 15 44 44.88 -28 22 15.2 L W84
2015-05-20 05:34:04 C 15 44 44.54 -28 22 14.0 L W84
2015-05-20 05:38:47 C 15 44 44.21 -28 22 12.9 L W84
2015-05-22 07:23:54 C 15 41 20.29 -28 09 52.5 L W84
2015-05-22 07:28:34 C 15 41 19.98 -28 09 51.1 L W84
2015-05-22 07:33:28 C 15 41 19.64 -28 09 49.8 L W84
2015-05-22 07:38:08 C 15 41 19.32 -28 09 48.6 L W84
2015-05-23 05:09:48 C 15 39 53.76 -28 04 20.9 L W84
2015-05-23 05:14:24 C 15 39 53.44 -28 04 19.8 L W84
2015-05-23 05:23:47 C 15 39 52.80 -28 04 17.4 L W84
2015-05-23 05:28:24 C 15 39 52.48 -28 04 16.3 L W84
2015-05-24 03:35:26 C 15 38 26.07 -27 58 33.8 L W84
2015-05-24 03:40:06 C 15 38 25.76 -27 58 32.6 L W84
2015-05-24 03:44:45 C 15 38 25.45 -27 58 31.4 L W84
2015-05-24 03:49:28 C 15 38 25.13 -27 58 30.2 L W84
2017-09-26 06:45:21 C 01 30 41.63 +14 13 56.5 q G96
2017-09-26 06:53:31 C 01 30 41.25 +14 13 57.0 q G96
2017-09-26 07:01:46 C 01 30 41.03 +14 13 57.9 q G96
2017-09-26 07:09:58 C 01 30 40.61 +14 13 58.0 q G96
2017-10-13 19:58:21 C 01 07 47.78 +13 50 37.2 q 151
2017-10-13 20:04:50 C 01 07 47.28 +13 50 37.1 q 151
2017-10-13 20:11:20 C 01 07 46.76 +13 50 37.3 q 151
2017-10-19 10:38:40 C 00 58 02.011 +13 28 05.09 L F51
2017-10-19 11:11:30 C 00 57 59.427 +13 27 58.63 L F51
2017-10-19 11:28:04 C 00 57 58.119 +13 27 55.16 L F51
2017-10-23 05:41:35 C 00 51 05.07 +13 08 59.8 U G96
2017-10-23 05:49:10 C 00 51 04.42 +13 08 57.9 U G96
2017-10-23 05:56:43 C 00 51 03.82 +13 08 56.4 U G96
2017-10-23 06:04:14 C 00 51 03.21 +13 08 54.7 U G96
2017-12-16 01:33:43 C 00 02 18.39 +10 26 00.8 U G96
2017-12-16 01:41:54 C 00 02 18.57 +10 26 02.2 U G96
2017-12-16 01:50:06 C 00 02 18.74 +10 26 03.7 U G96
2017-12-16 01:58:16 C 00 02 18.90 +10 26 05.1 U G96