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
2017-10-27 07:33:55 C 02 42 18.23 +26 24 34.4 U 703
2017-10-27 07:41:03 C 02 42 17.76 +26 24 18.5 U G96
2017-10-27 07:50:09 C 02 42 17.10 +26 23 57.8 U 703
2017-10-27 11:03:34 C 02 42 04.87 +26 16 51.6 o T08
2017-10-27 11:15:48 C 02 42 03.94 +26 16 24.4 o T08
2017-10-27 11:18:11 C 02 42 03.79 +26 16 18.8 o T08
2017-10-27 11:23:02 C 02 42 03.49 +26 16 07.5 o T08
2017-10-30 06:24:24 C 02 37 38.41 +23 35 57.9 U 703
2017-10-30 06:33:33 C 02 37 37.69 +23 35 34.8 U 703
2017-10-30 06:41:23 C 02 37 37.12 +23 35 14.4 U 703
2017-10-30 06:49:17 C 02 37 36.54 +23 34 54.9 U 703
2017-10-30 07:52:36 C 02 37 31.32 +23 32 12.4 q H45
2017-10-30 07:53:51 C 02 37 31.22 +23 32 09.1 q H45
2017-10-30 07:54:58 C 02 37 31.14 +23 32 06.1 q H45
2017-10-30 07:56:24 C 02 37 31.04 +23 32 02.6 q H45
2017-10-30 07:57:46 C 02 37 30.95 +23 31 59.2 q H45
2017-10-30 07:59:01 C 02 37 30.85 +23 31 55.7 q H45
2017-10-31 11:04:57 C 02 35 37.28 +22 21 25.5 T08
2017-10-31 11:05:37 C 02 35 37.35 +22 21 23.6 T08
2017-10-31 11:19:16 C 02 35 36.25 +22 20 46.0 T08
2017-10-31 11:22:41 C 02 35 35.92 +22 20 37.9 T08
2017-10-31 11:23:21 C 02 35 35.84 +22 20 36.5 T08
2017-10-31 11:42:00 C 02 35 34.45 +22 19 45.9 T08
2017-10-31 11:44:52 C 02 35 34.15 +22 19 38.6 T08
2017-10-31 11:52:12 C 02 35 33.62 +22 19 18.1 T08
2017-10-31 15:47:57 C 02 35 17.61 +22 08 41.6 q D29
2017-10-31 16:00:40 C 02 35 16.62 +22 08 07.6 q D29
2017-10-31 16:13:24 C 02 35 15.63 +22 07 32.8 q D29
2017-11-01 21:32:39 C 02 33 08.98 +20 46 37.1 q 160
2017-11-01 21:35:39 C 02 33 08.72 +20 46 29.0 q 160
2017-11-01 21:38:38 C 02 33 08.47 +20 46 21.3 q 160
2017-11-06 10:57:28 C 02 24 47.18 +15 11 42.3 U T05
2017-11-06 10:58:48 C 02 24 47.07 +15 11 38.0 U T05
2017-11-06 11:10:17 C 02 24 46.07 +15 10 59.9 U T05
2017-11-06 11:24:16 C 02 24 44.87 +15 10 13.8 U T05
2017-11-07 10:48:57 C 02 22 53.991 +13 52 02.96 L F51
2017-11-07 11:04:44 C 02 22 52.618 +13 51 09.36 L F51
2017-11-07 11:20:43 C 02 22 51.237 +13 50 15.32 L F51
2017-11-10 10:09:16 C 02 17 11.12 +09 41 43.6 U T05
2017-11-10 10:09:56 C 02 17 11.06 +09 41 41.9 U T05
2017-11-10 10:26:49 C 02 17 09.57 +09 40 39.9 U T05
2017-11-11 09:23:03 C 02 15 19.03 +08 16 50.7 U T08
2017-11-11 09:33:27 C 02 15 18.13 +08 16 11.2 U T08
2017-11-11 09:43:46 C 02 15 17.22 +08 15 33.5 U T08
2017-11-11 09:54:29 C 02 15 16.28 +08 14 53.5 U T08
2017-11-12 17:12:14 C 02 12 46.15 +06 18 16.4 q C97
2017-11-12 17:14:24 C 02 12 45.96 +06 18 11.0 q C97
2017-11-12 17:16:34 C 02 12 45.80 +06 18 01.1 q C97
2017-11-13 09:18:21 C 02 11 27.86 +05 17 32.8 U T05
2017-11-13 09:29:12 C 02 11 26.90 +05 16 51.8 U T05