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
2017-12-08 08:17:32 C 01 36 00.12 -28 40 00.4 U T08
2017-12-11 05:55:52 S 01 34 10.49 -31 25 59.8 L C51
2017-12-11 09:04:22 S 01 34 06.17 -31 33 08.9 L C51
2017-12-11 10:38:37 S 01 34 04.04 -31 36 42.0 L C51
2017-12-11 12:12:53 S 01 34 01.98 -31 40 15.7 L C51
2017-12-11 13:47:08 S 01 33 59.85 -31 43 48.3 L C51
2017-12-11 15:21:23 S 01 33 57.82 -31 47 21.2 L C51
2017-12-11 16:55:37 S 01 33 55.69 -31 50 54.1 L C51
2018-04-11 23:10:04 S 19 41 47.208 -35 29 57.23 L C51
2018-04-12 02:18:34 S 19 41 26.542 -35 18 04.61 L C51
2018-04-12 07:01:08 S 19 40 55.565 -35 00 15.12 L C51
2018-04-12 11:43:53 S 19 40 24.602 -34 42 20.48 L C51
2018-04-12 13:17:58 S 19 40 14.210 -34 36 21.71 L C51
2018-04-12 16:26:28 S 19 39 53.669 -34 24 24.05 L C51
2018-05-15 13:56:34 C 18 10 48.39 +13 49 31.2 U T08
2018-05-15 14:04:37 C 18 10 47.34 +13 49 50.9 U T08
2018-05-15 14:19:16 C 18 10 45.53 +13 50 28.4 U T08
2018-05-15 14:31:18 C 18 10 43.89 +13 50 56.6 U T08
2018-05-15 14:32:38 C 18 10 43.82 +13 51 00.9 U T08
2018-05-15 14:52:47 C 18 10 41.13 +13 51 50.8 U T08
2018-05-23 08:07:28 C 17 48 28.17 +20 14 49.3 U G96
2018-05-23 08:14:52 C 17 48 27.26 +20 15 01.2 U G96
2018-05-23 08:22:15 C 17 48 26.36 +20 15 13.7 U G96
2018-05-23 08:29:40 C 17 48 25.55 +20 15 25.6 U G96
2018-06-02 06:53:46 C 17 22 20.63 +25 05 23.6 V H21
2018-06-02 07:14:19 C 17 22 18.49 +25 05 40.3 V H21
2018-06-02 07:22:52 C 17 22 17.57 +25 05 46.7 V H21
2018-06-05 08:56:55 C 17 15 11.585 +25 57 19.75 U F52
2018-06-05 09:25:34 C 17 15 08.747 +25 57 37.12 U F52
2018-06-05 09:39:49 C 17 15 07.330 +25 57 45.82 U F52
2018-06-07 08:10:40 C 17 10 53.32 +26 22 24.5 U I41
2018-06-07 08:37:15 C 17 10 50.81 +26 22 37.1 U I41
2018-06-08 08:00:25 C 17 08 48.45 +26 32 55.6 U G96
2018-06-08 08:08:01 C 17 08 47.76 +26 32 58.7 U G96
2018-06-08 08:15:37 C 17 08 47.13 +26 33 01.3 U G96
2018-06-08 08:23:12 C 17 08 46.38 +26 33 04.8 U G96
2018-06-11 06:29:49 C 17 03 00.80 +26 56 09.4 U I41
2018-06-11 06:57:27 C 17 02 58.50 +26 56 16.4 U I41
2018-06-11 07:27:01 C 17 02 56.03 +26 56 23.8 U I41
2018-06-11 07:33:31 C 17 02 55.48 +26 56 25.6 U I41
2018-06-11 08:04:35 C 17 02 52.89 +26 56 33.1 U I41
2018-06-13 06:36:29 C 16 59 21.61 +27 05 47.6 U I41
2018-06-13 07:05:11 C 16 59 19.39 +27 05 52.2 U I41
2018-06-13 07:34:39 C 16 59 17.09 +27 05 56.6 U I41
2018-06-13 07:38:59 C 16 59 16.67 +27 05 56.2 U 703
2018-06-13 07:46:36 C 16 59 16.05 +27 05 59.3 U 703
2018-06-13 07:54:12 C 16 59 15.49 +27 05 59.3 U 703
2018-06-13 08:01:46 C 16 59 14.85 +27 06 00.3 U 703
2018-06-13 08:06:31 C 16 59 14.60 +27 06 01.3 U I41
2018-06-13 11:49:59 C 16 58 57.97 +27 06 36.8 U T05