504711 (2009 SP171)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3559642830 ± 1.84e-08
Semi-major axis (a)1.3556476946 AU ± 3.30e-09
Inclination (i)25.62453773° ± 4.95e-06
Long. of Asc. Node (Ω)223.07609229° ± 3.97e-06
Arg. of Perihelion (ω)285.20342096° ± 8.49e-06
Mean Anomaly (M)329.47632819° ± 8.98e-06
Mean Motion (n)0.6244418711°/day ± 2.28e-09
Perihelion dist (q)0.87308553 AU ± 2.50e-08
Aphelion dist (Q)1.83820985 AU ± 2.53e-08
Orbital Period1.57841158 yr ± 5.77e-09
Physical Parameters
H (abs. magnitude)19.27
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.281″
Uncertainty0
Orbit TypeApollo
MOID0.060582 AU
Observations Used265
Oppositions7
Arc Total2007-2025
First Observation Used2009-09-28
Last Observation Used2025-10-30
Observations (293)
Date Type RA Dec Mag Band Observatory
2007-05-29 05:15:00 C 19 12 53.38 +20 51 59.6 o 950
2007-05-29 05:17:14 C 19 12 53.23 +20 52 02.5 o 950
2009-09-28 04:55:47 C 23 33 51.12 +37 46 38.1 r G96
2009-09-28 05:04:19 C 23 33 50.43 +37 46 30.7 r G96
2009-09-28 05:13:24 C 23 33 49.86 +37 46 22.2 r G96
2009-09-28 05:22:26 C 23 33 49.06 +37 46 13.6 r G96
2009-09-28 07:52:20 C 23 33 37.36 +37 43 53.9 r G96
2009-09-28 07:53:19 C 23 33 37.26 +37 43 52.8 r G96
2009-09-28 07:54:20 C 23 33 37.18 +37 43 51.6 r G96
2009-09-28 07:55:07 C 23 33 37.11 +37 43 51.0 r G96
2009-09-28 08:00:00 C 23 33 36.53 +37 43 45.1 r H36
2009-09-28 08:01:25 C 23 33 36.57 +37 43 44.7 o H01
2009-09-28 08:06:04 C 23 33 36.21 +37 43 40.3 o H01
2009-09-28 08:08:53 C 23 33 35.93 +37 43 36.1 r H36
2009-09-28 08:12:14 C 23 33 35.74 +37 43 34.5 o H01
2009-09-28 08:17:47 C 23 33 35.27 +37 43 26.4 r H36
2009-09-28 19:00:48 C 23 32 48.49 +37 33 16.3 c 587
2009-09-28 19:06:29 C 23 32 48.04 +37 33 11.9 c 587
2009-09-29 04:21:04 C 23 32 06.90 +37 24 20.9 r G96
2009-09-29 04:30:14 C 23 32 06.14 +37 24 11.9 r G96
2009-09-29 04:39:43 C 23 32 05.42 +37 24 02.9 r G96
2009-09-29 04:48:58 C 23 32 04.74 +37 23 53.9 r G96
2009-09-29 06:54:05 C 23 31 55.02 +37 21 52.8 c 926
2009-09-29 07:00:00 C 23 31 54.56 +37 21 47.5 c 926
2009-09-29 07:05:53 C 23 31 54.15 +37 21 41.8 c 926
2009-09-30 01:37:48 C 23 30 32.86 +37 03 13.7 o H55
2009-09-30 01:40:43 C 23 30 32.65 +37 03 10.8 o H55
2009-09-30 01:43:09 C 23 30 32.48 +37 03 08.7 o H55
2009-10-01 02:20:37 C 23 28 44.54 +36 37 46.8 o H55
2009-10-01 02:29:07 C 23 28 43.87 +36 37 38.0 o H55
2009-10-01 02:34:37 C 23 28 43.46 +36 37 32.2 o H55
2009-10-01 02:37:03 C 23 28 43.26 +36 37 29.6 o H55
2009-10-05 03:39:31 C 23 21 52.25 +34 47 32.6 o H55
2009-10-05 03:55:40 C 23 21 50.99 +34 47 13.1 o H55
2009-10-05 04:08:45 C 23 21 49.98 +34 46 57.8 o H55
2009-10-08 19:43:20 C 23 16 06.64 +32 54 54.2 r J95
2009-10-08 20:05:28 C 23 16 05.29 +32 54 25.7 r J95
2009-10-08 20:19:56 C 23 16 04.33 +32 54 05.8 r J95
2009-10-09 07:49:15 C 23 15 20.76 +32 38 38.5 c 926
2009-10-09 07:59:05 C 23 15 20.13 +32 38 25.7 c 926
2009-10-15 07:10:05 C 23 07 22.32 +29 11 25.6 o 291
2009-10-15 07:16:14 C 23 07 21.99 +29 11 16.0 o 291
2009-10-15 07:22:22 C 23 07 21.71 +29 11 07.8 o 291
2009-10-18 05:02:25 C 23 04 10.775 +27 23 06.71 n 645
2009-10-18 05:03:37 C 23 04 10.707 +27 23 04.81 n 645
2009-10-18 05:06:00 C 23 04 10.603 +27 23 00.89 n 645
2009-10-18 05:07:12 C 23 04 10.555 +27 22 58.80 n 645
2009-10-27 02:22:14 C 22 57 35.55 +21 37 39.4 r 448
2009-10-27 03:12:19 C 22 57 34.39 +21 36 18.1 r 448
2009-10-27 04:00:41 C 22 57 33.35 +21 34 59.5 r 448