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
2015-03-18 03:00:30 C 08 05 50.13 +41 34 56.2 u H21
2015-03-18 03:10:56 C 08 05 49.66 +41 34 51.9 u H21
2015-03-25 07:01:23 C 07 59 41.81 +40 13 58.4 o 291
2015-03-25 07:15:09 C 07 59 41.46 +40 13 51.1 o 291
2015-03-25 07:28:53 C 07 59 41.11 +40 13 43.9 o 291
2015-03-31 19:19:16 C 07 57 19.65 +38 48 20.6 t 493
2015-03-31 19:45:29 C 07 57 19.41 +38 48 05.5 t 493
2015-04-02 06:23:41 C 07 57 10.46 +38 27 48.1 t 705
2015-04-02 06:25:33 C 07 57 10.46 +38 27 47.0 t 705
2015-04-02 06:27:25 C 07 57 10.45 +38 27 45.8 t 705
2015-04-06 04:36:26 C 07 57 28.01 +37 30 41.3 o 926
2015-04-06 05:00:50 C 07 57 28.14 +37 30 25.1 o 926
2015-04-06 05:27:15 C 07 57 28.29 +37 30 08.9 o 926
2015-04-18 01:41:09 C 08 03 40.44 +34 20 31.0 q H21
2015-04-18 01:55:12 C 08 03 40.87 +34 20 20.4 q H21
2015-04-18 02:09:15 C 08 03 41.31 +34 20 10.3 q H21
2015-04-20 04:39:12 C 08 05 31.69 +33 43 46.4 q G96
2015-04-20 04:46:37 C 08 05 31.96 +33 43 40.8 q G96
2015-04-20 05:01:26 C 08 05 32.50 +33 43 29.6 q G96
2015-05-09 04:34:45 C 08 29 48.36 +27 30 25.3 o 691
2015-05-09 04:38:40 C 08 29 48.56 +27 30 21.4 o 691
2015-05-09 04:42:14 C 08 29 48.76 +27 30 18.0 o 691
2015-05-09 05:06:16 C 08 29 50.41 +27 29 55.6 o 291
2015-05-09 05:09:26 C 08 29 50.63 +27 29 52.7 o 291
2015-05-09 05:12:35 C 08 29 50.83 +27 29 50.2 o 291
2015-06-06 04:23:45 C 09 20 05.06 +14 29 20.5 o 291
2015-06-06 04:25:53 C 09 20 05.20 +14 29 17.5 o 291
2015-06-06 04:28:05 C 09 20 05.40 +14 29 14.2 o 291
2015-08-15 06:16:13 S 13 33 53.143 -72 40 16.79 L C51
2015-08-15 07:50:39 S 13 35 23.777 -72 45 34.74 L C51
2015-08-15 09:25:16 S 13 36 56.179 -72 50 52.08 L C51
2015-08-15 14:08:34 S 13 41 37.714 -73 06 22.75 L C51
2015-08-22 08:29:49 C 17 19 30.68 -75 53 23.7 t 474
2015-08-22 08:32:42 C 17 19 34.33 -75 53 19.3 t 474
2015-08-22 08:37:02 C 17 19 39.94 -75 53 13.4 t 474
2015-08-22 08:39:57 C 17 19 43.63 -75 53 09.1 t 474
2015-09-04 00:50:43 C 20 31 04.89 -60 47 16.4 u 807
2015-09-04 00:55:03 C 20 31 05.91 -60 47 03.0 u 807
2015-09-04 01:03:32 C 20 31 07.88 -60 46 36.0 u 807
2015-09-04 01:11:56 C 20 31 09.85 -60 46 09.2 u 807
2015-09-04 01:20:27 C 20 31 11.83 -60 45 42.1 u 807
2015-09-04 01:37:37 C 20 31 15.77 -60 44 47.4 u 807
2015-09-04 01:41:27 C 20 31 16.72 -60 44 35.0 u 807
2015-09-16 10:44:35 C 21 16 20.26 -46 54 34.8 u Q60
2015-09-16 10:57:52 C 21 16 21.45 -46 54 03.8 u Q60
2015-09-16 11:11:06 C 21 16 22.68 -46 53 31.8 u Q60
2015-09-29 02:59:07 C 21 40 07.13 -36 42 47.0 u 807
2015-09-29 03:02:43 C 21 40 07.36 -36 42 40.7 u 807
2015-09-29 03:05:42 C 21 40 07.53 -36 42 35.8 u 807
2015-09-29 03:08:40 C 21 40 07.73 -36 42 31.1 u 807
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)