517681 (2015 DE198)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5824731052 ± 7.13e-09
Semi-major axis (a)2.0638151766 AU ± 2.40e-09
Inclination (i)12.24158619° ± 2.00e-06
Long. of Asc. Node (Ω)33.20634214° ± 3.19e-06
Arg. of Perihelion (ω)218.16964482° ± 4.33e-06
Mean Anomaly (M)183.48642443° ± 4.92e-07
Mean Motion (n)0.3324344885°/day ± 5.79e-10
Perihelion dist (q)0.86169834 AU ± 1.48e-08
Aphelion dist (Q)3.26593201 AU ± 1.52e-08
Orbital Period2.96487373 yr ± 5.17e-09
Physical Parameters
H (abs. magnitude)18.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.295″
Uncertainty0
Orbit TypeApollo
MOID0.042036 AU
Observations Used965
Radar Obs Used4
Oppositions47
Arc Total1953-2024
First Observation Used1953-03-08
Last Observation Used2024-10-07
Observations (1458)
Date Type RA Dec Mag Band Observatory
2021-03-31 07:12:21 C 09 09 06.48 +42 30 08.6 V 703
2021-03-31 07:19:27 C 09 09 05.57 +42 30 03.5 V 703
2021-03-31 07:26:34 C 09 09 04.58 +42 29 59.8 V 703
2021-03-31 07:50:39 C 09 09 02.55 +42 29 56.3 V T05
2021-03-31 07:55:56 C 09 09 01.83 +42 29 53.2 V T05
2021-03-31 08:04:29 C 09 09 00.70 +42 29 48.7 V T05
2021-03-31 08:20:18 C 09 08 58.53 +42 29 39.3 V T05
2021-04-01 07:03:03 C 09 06 08.191 +42 16 30.96 U F52
2021-04-01 07:19:47 C 09 06 05.958 +42 16 20.84 U F52
2021-04-01 07:36:28 C 09 06 03.733 +42 16 10.70 U F52
2021-04-02 04:50:39 C 09 03 25.87 +42 02 54.0 V 703
2021-04-02 04:58:21 C 09 03 24.83 +42 02 48.4 V 703
2021-04-02 05:06:04 C 09 03 23.85 +42 02 43.5 V 703
2021-04-02 05:13:45 C 09 03 22.85 +42 02 38.7 V 703
2021-04-02 05:42:23 C 09 03 19.32 +42 02 19.5 U I41
2021-04-02 05:43:03 C 09 03 19.23 +42 02 19.0 U I41
2021-04-02 05:44:25 C 09 03 19.05 +42 02 18.1 U I41
2021-04-02 07:24:50 C 09 03 06.08 +42 01 09.9 U I41
2021-04-02 09:51:48 C 09 02 47.94 +41 59 40.1 V T08
2021-04-02 09:59:48 C 09 02 46.93 +41 59 34.3 V T08
2021-04-02 10:16:20 C 09 02 44.77 +41 59 22.3 V T08
2021-04-02 10:21:40 C 09 02 44.10 +41 59 18.9 V T08
2021-04-02 20:44:14 C 09 01 29.24 +41 52 23.2 q 160
2021-04-02 20:50:16 C 09 01 28.47 +41 52 19.0 q 160
2021-04-02 20:56:18 C 09 01 27.69 +41 52 14.8 q 160
2021-04-05 04:32:55 C 08 54 48.75 +41 12 05.7 V 703
2021-04-05 04:41:13 C 08 54 47.83 +41 11 59.0 V 703
2021-04-05 04:49:31 C 08 54 46.75 +41 11 52.9 V 703
2021-04-05 04:57:49 C 08 54 45.71 +41 11 45.7 V 703
2021-04-08 04:32:30 C 08 46 34.02 +40 11 38.0 V 703
2021-04-08 04:40:55 C 08 46 33.05 +40 11 30.0 V 703
2021-04-08 04:49:21 C 08 46 32.08 +40 11 21.8 V 703
2021-04-10 07:02:49 C 08 41 01.27 +39 23 44.7 V T08
2021-04-10 07:07:27 C 08 41 00.70 +39 23 39.7 V T08
2021-04-10 07:16:47 C 08 40 59.64 +39 23 30.1 V T08
2021-04-10 07:31:25 C 08 40 57.93 +39 23 15.6 V T08
2021-04-13 04:34:40 C 08 33 39.91 +38 10 07.5 V 703
2021-04-13 04:42:18 C 08 33 39.10 +38 09 58.5 V 703
2021-04-13 04:49:55 C 08 33 38.16 +38 09 49.8 V 703
2021-04-13 04:57:33 C 08 33 37.40 +38 09 41.2 V 703
2021-04-13 21:06:20 C 08 31 57.50 +37 51 16.2 V 160
2021-04-13 21:11:17 C 08 31 56.97 +37 51 10.2 V 160
2021-04-13 21:16:11 C 08 31 56.43 +37 51 04.6 V 160
2021-04-14 04:03:43 C 08 31 14.99 +37 43 21.4 V G96
2021-04-14 04:11:50 C 08 31 14.10 +37 43 11.6 V G96
2021-04-14 04:19:57 C 08 31 13.21 +37 43 02.0 V G96
2021-04-14 04:28:03 C 08 31 12.31 +37 42 52.3 V G96
2021-04-17 20:14:19 C 08 22 22.43 +35 53 44.1 V 160
2021-04-17 20:19:24 C 08 22 21.87 +35 53 37.5 V 160
2021-04-17 20:23:26 C 08 22 21.45 +35 53 32.1 V 160
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-04-12 08:00:00 390922.774 2 Hz 8560 -14 -14
2024-04-13 00:30:00 325842.885 2 Hz 8560 -14 -14
2024-04-13 01:40:00 51160316.43 2 us 8560 -14 -14
2024-04-13 02:30:00 51049208.72 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)