172974 (2005 YW55)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2464808739 ± 3.21e-08
Semi-major axis (a)1.6370166952 AU ± 4.04e-09
Inclination (i)8.47291926° ± 4.96e-06
Long. of Asc. Node (Ω)239.35197615° ± 2.23e-05
Arg. of Perihelion (ω)256.74539085° ± 2.74e-05
Mean Anomaly (M)162.84422405° ± 2.05e-05
Mean Motion (n)0.4705790766°/day ± 1.74e-09
Perihelion dist (q)1.23352339 AU ± 5.27e-08
Aphelion dist (Q)2.04051000 AU ± 5.28e-08
Orbital Period2.09449662 yr ± 7.75e-09
Physical Parameters
H (abs. magnitude)19.40
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.399″
Uncertainty0
Orbit TypeAmor
MOID0.293200 AU
Observations Used220
Oppositions12
Arc Total2002-2025
First Observation Used2002-06-04
Last Observation Used2025-06-22
Observations (226)
Date Type RA Dec Mag Band Observatory
2007-12-05 05:55:51 C 03 32 21.62 +15 26 27.3 w 699
2007-12-05 05:57:10 C 03 32 21.43 +15 26 27.5 w 699
2007-12-05 06:23:30 C 03 32 20.09 +15 26 02.1 w 699
2007-12-05 06:24:49 C 03 32 20.03 +15 26 01.3 w 699
2007-12-06 00:35:23 C 03 31 29.74 +15 09 41.4 r 106
2007-12-06 00:49:14 C 03 31 29.07 +15 09 29.7 r 106
2007-12-06 01:03:04 C 03 31 28.40 +15 09 16.9 r 106
2007-12-06 01:16:53 C 03 31 27.74 +15 09 04.3 r 106
2007-12-15 05:01:07 C 03 23 17.66 +12 03 12.9 r 703
2007-12-15 05:10:31 C 03 23 17.37 +12 03 04.8 r 703
2007-12-15 05:19:56 C 03 23 17.08 +12 02 58.0 r 703
2007-12-15 05:29:18 C 03 23 16.72 +12 02 50.3 r 703
2007-12-17 02:01:47 C 03 22 08.20 +11 28 37.2 r H45
2007-12-17 02:03:55 C 03 22 08.15 +11 28 36.9 r H45
2007-12-17 02:05:47 C 03 22 08.09 +11 28 34.6 r H45
2007-12-17 02:09:46 C 03 22 08.05 +11 28 31.7 r H45
2007-12-17 02:19:05 C 03 22 07.71 +11 28 24.4 r H45
2007-12-19 01:49:03 C 03 21 07.03 +10 53 38.6 r H45
2007-12-19 01:51:18 C 03 21 07.01 +10 53 36.1 r H45
2009-09-30 07:39:06 C 01 39 29.77 +23 46 12.2 r G96
2009-09-30 07:47:52 C 01 39 29.37 +23 46 09.8 r G96
2009-09-30 07:56:35 C 01 39 29.01 +23 46 07.8 r G96
2009-09-30 08:05:21 C 01 39 28.65 +23 46 05.8 r G96
2011-11-01 02:30:27 C 23 15 05.79 +07 16 57.3 r G96
2011-11-01 02:42:02 C 23 15 05.65 +07 16 51.6 r G96
2011-11-01 02:53:38 C 23 15 05.47 +07 16 45.7 r G96
2011-11-01 03:05:17 C 23 15 05.32 +07 16 40.8 r G96
2015-07-13 07:55:17 C 22 25 09.00 +04 51 37.2 u H21
2015-07-13 08:11:16 C 22 25 08.68 +04 51 40.5 u H21
2015-07-13 08:28:21 C 22 25 08.40 +04 51 44.0 u H21
2015-07-21 08:29:07 C 22 20 49.19 +05 22 37.5 u H21
2015-07-21 08:50:46 C 22 20 48.52 +05 22 40.2 u H21
2015-07-21 09:12:08 C 22 20 47.89 +05 22 42.7 u H21
2015-09-15 02:09:35 C 21 17 17.94 +00 41 55.6 u H21
2015-09-15 02:30:50 C 21 17 17.19 +00 41 46.4 u H21
2015-09-15 02:52:16 C 21 17 16.42 +00 41 37.2 u H21
2015-09-17 03:13:08 C 21 15 40.47 +00 22 02.8 u H21
2015-09-17 03:34:50 C 21 15 39.75 +00 21 54.1 u H21
2015-09-17 03:55:24 C 21 15 39.06 +00 21 45.9 u H21
2017-07-17 05:57:00 C 21 17 40.09 -00 09 09.0 u H21
2017-07-17 06:08:27 C 21 17 39.52 -00 09 08.6 u H21
2017-07-17 06:20:09 C 21 17 38.96 -00 09 08.0 u H21
2019-06-11 07:26:23 C 20 40 33.80 -07 21 40.1 u H21
2019-06-11 07:35:08 C 20 40 33.65 -07 21 37.9 u H21
2019-06-11 07:47:42 C 20 40 33.43 -07 21 34.4 u H21
2019-07-05 12:02:09 C 20 19 54.401 -05 40 07.82 U F52
2019-07-05 12:37:45 C 20 19 52.474 -05 40 05.34 U F52
2019-07-05 12:55:34 C 20 19 51.488 -05 40 03.90 U F52
2025-03-01 14:41:49 C 15 56 32.646 -30 05 18.78 X F52
2025-03-01 15:11:10 C 15 56 35.054 -30 05 22.01 X F52