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
2017-11-13 09:39:58 C 02 11 25.96 +05 16 10.8 U T05
2017-11-13 09:50:04 C 02 11 25.06 +05 15 32.5 U T05
2017-11-15 05:53:40 C 02 07 55.19 +02 27 02.0 U 703
2017-11-15 06:01:18 C 02 07 54.54 +02 26 32.2 U 703
2017-11-15 06:08:56 C 02 07 53.89 +02 26 03.3 U 703
2017-11-15 06:16:33 C 02 07 53.22 +02 25 34.0 U 703
2017-11-15 09:08:05 C 02 07 39.74 +02 14 39.7 U T08
2017-11-15 09:19:53 C 02 07 38.73 +02 13 54.5 U T08
2017-11-15 09:31:36 C 02 07 37.71 +02 13 09.0 U T08
2017-11-15 09:43:48 C 02 07 36.65 +02 12 22.0 U T08
2017-11-15 18:17:02 C 02 06 57.68 +01 39 09.9 q 246
2017-11-15 18:18:21 C 02 06 57.58 +01 39 04.7 q 246
2017-11-15 18:19:26 C 02 06 57.52 +01 39 00.9 q 246
2017-11-16 23:39:39 C 02 04 38.82 -00 14 22.5 q 160
2017-11-16 23:42:36 C 02 04 38.57 -00 14 34.3 q 160
2017-11-16 23:45:34 C 02 04 38.28 -00 14 46.3 q 160
2017-11-17 09:14:59 C 02 03 55.01 -00 51 19.8 U T05
2017-11-17 09:29:04 C 02 03 53.84 -00 52 14.4 U T05
2017-11-17 09:43:26 C 02 03 52.62 -00 53 10.5 U T05
2017-11-19 05:06:04 C 02 00 36.84 -03 40 55.9 U 703
2017-11-19 05:13:49 C 02 00 36.18 -03 41 24.9 U 703
2017-11-19 05:21:34 C 02 00 35.51 -03 41 54.8 U 703
2017-11-19 05:29:18 C 02 00 34.90 -03 42 24.6 U 703
2017-11-19 05:57:21 C 02 00 32.62 -03 44 13.1 U G96
2017-11-19 06:04:52 C 02 00 32.01 -03 44 42.0 U G96
2017-11-19 06:12:20 C 02 00 31.39 -03 45 10.8 U G96
2017-11-19 06:19:54 C 02 00 30.78 -03 45 39.9 U G96
2017-11-19 08:45:55 C 02 00 20.16 -03 54 56.4 U T08
2017-11-19 08:57:52 C 02 00 19.20 -03 55 41.9 U T08
2017-11-19 09:09:45 C 02 00 18.21 -03 56 28.2 U T08
2017-11-19 09:21:35 C 02 00 17.23 -03 57 14.0 U T08
2017-11-20 08:31:46 C 01 58 35.901 -05 26 08.76 L F51
2017-11-20 08:50:06 C 01 58 34.422 -05 27 18.77 L F51
2017-11-20 09:08:22 C 01 58 32.946 -05 28 28.58 L F51
2017-11-20 09:26:34 C 01 58 31.482 -05 29 38.06 L F51
2017-11-21 08:49:08 C 01 56 51.50 -06 58 36.2 U T05
2017-11-21 09:00:52 C 01 56 50.56 -06 59 21.2 U T05
2017-11-21 09:09:17 C 01 56 50.05 -06 59 54.5 U T05
2017-11-21 09:13:33 C 01 56 49.56 -07 00 08.5 U T05
2017-11-23 08:38:23 C 01 53 34.31 -09 57 33.7 U T08
2017-11-23 08:50:16 C 01 53 33.39 -09 58 18.0 U T08
2017-11-23 09:02:11 C 01 53 32.53 -09 59 01.3 U T08
2017-11-23 09:13:56 C 01 53 31.63 -09 59 45.3 U T08
2017-11-24 05:40:14 C 01 52 11.25 -11 14 45.3 U 703
2017-11-24 05:49:57 C 01 52 10.53 -11 15 20.4 U 703
2017-11-24 05:59:34 C 01 52 09.83 -11 15 55.2 U 703
2017-11-24 06:09:09 C 01 52 09.15 -11 16 30.4 U 703
2017-12-08 07:57:06 C 01 36 00.89 -28 39 10.3 U T08
2017-12-08 07:59:05 C 01 36 00.82 -28 39 14.4 U T08
2017-12-08 08:09:38 C 01 36 00.34 -28 39 40.5 U T08