494697 (2004 SW55)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3339835777 ± 1.55e-08
Semi-major axis (a)1.4275687525 AU ± 4.66e-10
Inclination (i)8.78530517° ± 2.56e-06
Long. of Asc. Node (Ω)75.11716199° ± 1.62e-05
Arg. of Perihelion (ω)352.85626071° ± 1.62e-05
Mean Anomaly (M)112.35110450° ± 3.74e-06
Mean Motion (n)0.5778521403°/day ± 2.83e-10
Perihelion dist (q)0.95078423 AU ± 2.22e-08
Aphelion dist (Q)1.90435327 AU ± 2.22e-08
Orbital Period1.70567212 yr ± 8.36e-10
Physical Parameters
H (abs. magnitude)20.77
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.286″
Uncertainty0
Orbit TypeApollo
MOID0.031885 AU
Observations Used162
Oppositions7
Arc Total2004-2022
First Observation Used2004-09-24
Last Observation Used2022-02-24
Observations (175)
Date Type RA Dec Mag Band Observatory
2016-12-10 11:27:45 C 12 25 29.44 +07 15 18.0 o 291
2016-12-10 11:41:49 C 12 25 31.13 +07 15 14.8 o 291
2016-12-10 11:55:55 C 12 25 32.82 +07 15 11.0 o 291
2017-02-06 10:37:14 C 14 17 14.67 +06 07 45.4 u H21
2017-02-06 10:46:14 C 14 17 14.89 +06 07 47.5 u H21
2017-02-06 11:02:08 C 14 17 15.28 +06 07 51.5 u H21
2017-02-26 09:33:05 C 14 18 59.16 +08 47 15.7 u H21
2017-02-26 09:42:09 C 14 18 58.90 +08 47 19.4 u H21
2017-02-26 09:56:30 C 14 18 58.53 +08 47 25.6 u H21
2017-03-02 12:02:44 C 14 16 06.23 +09 29 10.1 q G96
2017-03-02 12:08:51 C 14 16 06.04 +09 29 12.9 q G96
2017-03-02 12:15:00 C 14 16 05.78 +09 29 15.8 q G96
2017-03-02 12:21:07 C 14 16 05.52 +09 29 18.0 q G96
2017-03-18 10:51:25 C 13 54 44.44 +12 09 54.4 o 291
2017-03-18 11:02:11 C 13 54 43.60 +12 09 58.4 o 291
2017-03-18 11:12:58 C 13 54 42.77 +12 10 02.3 o 291
2017-03-26 11:09:57 C 13 39 20.75 +13 10 31.6 o 691
2017-03-26 11:25:22 C 13 39 19.42 +13 10 35.8 o 691
2017-03-26 11:40:48 C 13 39 18.02 +13 10 39.1 o 691
2017-03-27 09:06:17 C 13 37 29.38 +13 15 53.4 q G96
2017-03-27 09:12:26 C 13 37 28.83 +13 15 53.5 q G96
2017-03-27 09:21:01 C 13 37 28.07 +13 15 56.0 q G96
2017-03-31 07:57:50 C 13 29 20.18 +13 34 34.9 q G96
2017-03-31 08:03:59 C 13 29 19.63 +13 34 36.9 q G96
2017-03-31 08:10:08 C 13 29 19.04 +13 34 37.2 q G96
2017-03-31 08:16:17 C 13 29 18.49 +13 34 38.9 q G96
2017-04-21 04:53:40 C 12 51 02.26 +13 07 31.1 u H21
2017-04-21 05:11:13 C 12 51 01.15 +13 07 27.4 u H21
2017-04-21 05:33:06 C 12 50 59.83 +13 07 21.3 u H21
2017-05-16 03:24:59 C 12 31 44.44 +09 15 41.4 o 291
2017-05-16 03:57:27 C 12 31 44.11 +09 15 26.2 o 291
2017-05-16 04:29:49 C 12 31 43.84 +09 15 10.0 o 291
2019-05-29 09:59:00 C 16 47 33.802 -20 43 34.21 U F51
2019-05-29 10:14:57 C 16 47 32.492 -20 43 35.72 U F51
2019-05-29 10:30:53 C 16 47 31.173 -20 43 37.47 U F51
2019-05-29 10:46:47 C 16 47 29.867 -20 43 39.09 U F51
2021-12-28 10:12:28 C 23 20 45.10 +10 47 47.2 V D29
2021-12-28 10:32:50 C 23 20 47.93 +10 49 26.4 V D29
2021-12-28 10:53:12 C 23 20 50.76 +10 51 05.8 V D29
2022-01-05 01:41:22 C 23 53 15.70 +26 53 06.1 V G96
2022-01-05 01:49:39 C 23 53 17.29 +26 53 51.2 V G96
2022-01-05 01:57:56 C 23 53 18.87 +26 54 36.1 V G96
2022-01-05 02:06:08 C 23 53 20.44 +26 55 20.8 V G96
2022-01-10 01:43:26 C 00 21 30.57 +37 45 09.1 V 703
2022-01-10 02:06:59 C 00 21 36.55 +37 47 13.4 V 703
2022-01-17 22:47:10 C 01 24 20.76 +52 40 07.6 V Z80
2022-01-17 23:06:07 C 01 24 28.44 +52 41 20.9 V Z80
2022-01-21 12:05:28 S 02 02 31.109 +57 43 48.47 L C51
2022-01-21 15:13:36 S 02 04 02.966 +57 53 29.58 L C51
2022-01-21 21:30:03 S 02 07 07.584 +58 12 31.57 L C51