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
2007-11-05 05:55:31 C 04 05 30.29 +24 47 57.1 r H45
2007-11-05 06:10:34 C 04 05 29.75 +24 47 49.2 r H45
2007-11-05 06:13:01 C 04 05 29.72 +24 47 48.1 r H45
2007-11-05 06:15:23 C 04 05 29.59 +24 47 46.9 r H45
2007-11-05 06:17:43 C 04 05 29.58 +24 47 45.4 r H45
2007-11-06 22:28:43 C 04 04 17.03 +24 25 33.2 r A13
2007-11-06 22:54:07 C 04 04 16.13 +24 25 19.1 r A13
2007-11-13 06:27:45 C 03 58 33.92 +22 49 36.3 w 699
2007-11-13 07:04:38 C 03 58 32.23 +22 49 11.3 w 699
2007-11-13 07:41:32 C 03 58 30.43 +22 48 45.5 w 699
2007-11-13 08:18:26 C 03 58 28.78 +22 48 19.5 w 699
2007-11-14 05:05:24 C 03 57 35.15 +22 33 42.3 o 691
2007-11-14 05:30:49 C 03 57 33.94 +22 33 24.7 o 691
2007-11-14 05:56:14 C 03 57 32.68 +22 33 06.6 o 691
2007-11-15 07:35:31 C 03 56 22.96 +22 14 36.2 19.6 c 704
2007-11-15 07:53:31 C 03 56 22.02 +22 14 23.0 19.8 c 704
2007-11-15 08:11:32 C 03 56 21.11 +22 14 10.0 19.8 c 704
2007-11-15 08:29:32 C 03 56 20.12 +22 13 55.9 19.5 c 704
2007-11-15 08:47:31 C 03 56 19.31 +22 13 42.5 19.3 c 704
2007-11-16 06:09:51 C 03 55 20.33 +21 57 52.1 r H45
2007-11-16 06:12:14 C 03 55 20.21 +21 57 50.4 r H45
2007-11-16 06:13:45 C 03 55 20.13 +21 57 49.2 r H45
2007-11-16 06:15:21 C 03 55 20.07 +21 57 48.0 r H45
2007-11-16 06:17:02 C 03 55 20.00 +21 57 46.3 r H45
2007-11-16 06:18:37 C 03 55 19.89 +21 57 45.5 r H45
2007-11-18 04:30:52 C 03 53 07.85 +21 22 23.2 o 691
2007-11-18 05:02:37 C 03 53 06.19 +21 21 58.8 o 691
2007-11-18 05:24:27 C 03 53 05.02 +21 21 42.2 o 691
2007-11-30 18:29:27 C 03 37 35.78 +17 03 21.3 o A78
2007-11-30 18:40:08 C 03 37 35.24 +17 03 11.4 o A78
2007-11-30 18:51:21 C 03 37 34.62 +17 03 02.0 o A78
2007-11-30 19:02:32 C 03 37 34.03 +17 02 52.0 o A78
2007-12-03 06:22:52 C 03 34 36.55 +16 09 18.1 r 703
2007-12-03 06:35:10 C 03 34 35.94 +16 09 06.7 r 703
2007-12-03 06:47:31 C 03 34 35.25 +16 08 55.7 r 703
2007-12-03 06:59:51 C 03 34 34.60 +16 08 45.2 r 703
2007-12-04 05:59:48 C 03 33 28.71 +15 48 00.1 18.9 c 704
2007-12-04 06:18:59 C 03 33 27.67 +15 47 42.7 19.1 c 704
2007-12-04 06:37:35 C 03 33 26.68 +15 47 25.6 19.1 c 704
2007-12-04 06:55:56 C 03 33 25.72 +15 47 09.0 19.2 c 704
2007-12-04 07:14:42 C 03 33 24.78 +15 46 52.3 19.2 c 704
2007-12-05 05:00:34 C 03 32 24.48 +15 27 17.1 w 699
2007-12-05 05:01:53 C 03 32 24.26 +15 27 16.3 w 699
2007-12-05 05:28:13 C 03 32 23.10 +15 26 52.6 w 699
2007-12-05 05:29:32 C 03 32 22.83 +15 26 50.9 w 699
2007-12-05 05:31:43 C 03 32 22.42 +15 26 49.5 r H45
2007-12-05 05:33:55 C 03 32 22.31 +15 26 47.5 r H45
2007-12-05 05:36:04 C 03 32 22.20 +15 26 45.4 r H45
2007-12-05 05:38:10 C 03 32 22.08 +15 26 43.5 r H45
2007-12-05 05:40:36 C 03 32 21.98 +15 26 41.7 r H45