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
2009-11-06 01:05:23 C 22 55 58.92 +15 16 17.6 o H21
2009-11-06 01:07:36 C 22 55 58.93 +15 16 14.1 o H21
2009-11-06 01:17:39 C 22 55 58.98 +15 15 58.9 o H21
2010-06-03 03:37:02 C 10 54 40.39 +11 23 45.9 c 926
2010-06-03 03:41:55 C 10 54 41.67 +11 23 49.3 c 926
2010-06-03 03:46:48 C 10 54 42.96 +11 23 52.4 c 926
2010-06-04 03:38:28 C 11 01 04.63 +11 38 59.8 c 926
2010-06-04 03:52:18 C 11 01 08.26 +11 39 07.6 c 926
2010-07-04 05:58:52 C 13 24 33.65 +12 57 39.7 o 291
2010-07-04 06:04:40 C 13 24 34.47 +12 57 38.5 o 291
2010-07-04 06:10:28 C 13 24 35.36 +12 57 37.3 o 291
2012-07-23 06:47:59 C 22 15 06.97 +36 23 41.8 u H21
2012-07-23 07:18:06 C 22 15 05.67 +36 23 54.9 u H21
2012-07-23 07:36:05 C 22 15 04.84 +36 24 01.8 u H21
2015-08-09 07:40:37 C 19 17 17.37 +29 40 00.1 t 705
2015-08-09 07:42:29 C 19 17 17.26 +29 39 59.1 t 705
2015-08-09 07:44:21 C 19 17 17.17 +29 39 57.9 t 705
2017-08-23 09:40:58 C 02 25 57.09 +38 40 22.0 u H21
2017-08-23 09:47:59 C 02 25 57.48 +38 40 24.0 u H21
2017-08-23 09:56:27 C 02 25 57.96 +38 40 26.2 u H21
2017-10-03 11:28:11 C 03 00 25.296 +38 14 23.11 L F51
2017-10-03 11:45:41 C 03 00 25.199 +38 14 14.08 L F51
2017-10-03 12:03:08 C 03 00 25.122 +38 14 05.06 L F51
2017-10-03 12:20:40 C 03 00 25.019 +38 13 55.94 L F51
2017-10-11 08:06:48 C 02 58 31.23 +36 01 03.1 U G96
2017-10-11 08:13:37 C 02 58 31.03 +36 00 57.0 U G96
2017-10-11 08:20:23 C 02 58 30.86 +36 00 50.9 U G96
2017-10-11 08:27:10 C 02 58 30.70 +36 00 44.6 U G96
2017-10-15 20:57:19 C 02 55 37.75 +34 06 20.9 S 628
2017-10-15 21:49:20 C 02 55 35.81 +34 05 19.6 S 628
2017-10-15 22:44:00 C 02 55 33.81 +34 04 13.6 S 628
2017-10-16 22:32:15 C 02 54 44.01 +33 34 36.9 o L52
2017-10-16 22:35:55 C 02 54 43.81 +33 34 33.0 o L52
2017-10-16 22:39:36 C 02 54 43.77 +33 34 27.5 o L52
2017-10-18 07:25:06 C 02 53 29.57 +32 50 47.0 U G96
2017-10-18 07:33:20 C 02 53 29.20 +32 50 35.7 U G96
2017-10-18 07:41:34 C 02 53 28.81 +32 50 24.3 U G96
2017-10-18 07:49:49 C 02 53 28.44 +32 50 12.9 U G96
2017-10-24 07:56:23 C 02 46 33.38 +28 52 54.5 U 703
2017-10-24 08:04:25 C 02 46 32.88 +28 52 39.3 U 703
2017-10-24 08:12:26 C 02 46 32.37 +28 52 23.8 U 703
2017-10-24 08:20:30 C 02 46 31.87 +28 52 08.3 U 703
2017-10-25 07:12:24 C 02 45 14.07 +28 07 04.7 U 703
2017-10-25 07:21:50 C 02 45 13.53 +28 06 46.0 U 703
2017-10-25 07:31:09 C 02 45 12.87 +28 06 27.5 U 703
2017-10-25 07:41:02 C 02 45 12.20 +28 06 06.7 U 703
2017-10-27 07:17:57 C 02 42 19.35 +26 25 09.9 U G96
2017-10-27 07:25:45 C 02 42 18.81 +26 24 52.5 U G96
2017-10-27 07:26:16 C 02 42 18.76 +26 24 51.0 U 703
2017-10-27 07:33:26 C 02 42 18.28 +26 24 35.5 U G96