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
2015-09-29 03:20:51 C 21 40 08.42 -36 42 09.7 u 807
2015-10-15 06:26:44 C 22 02 48.585 -27 34 47.19 L F51
2015-10-15 06:41:57 C 22 02 49.358 -27 34 29.22 L F51
2015-10-15 06:57:10 C 22 02 50.145 -27 34 11.17 L F51
2018-01-16 11:14:51 C 10 36 24.931 +33 16 52.58 U F51
2018-01-16 11:31:46 C 10 36 24.505 +33 17 04.05 U F51
2018-01-16 11:48:43 C 10 36 24.237 +33 17 13.97 U F51
2018-01-16 12:05:51 C 10 36 23.964 +33 17 24.12 U F51
2018-01-20 10:16:10 C 10 34 45.10 +34 13 46.3 U G96
2018-01-20 10:23:34 C 10 34 44.90 +34 13 50.5 U G96
2018-01-20 10:30:59 C 10 34 44.75 +34 13 56.4 U G96
2018-01-20 10:38:26 C 10 34 44.52 +34 14 00.3 U G96
2018-02-09 07:22:10 C 10 11 49.60 +39 31 50.1 U G96
2018-02-09 07:29:41 C 10 11 49.02 +39 31 55.0 U G96
2018-02-09 07:37:13 C 10 11 48.40 +39 31 59.8 U G96
2018-02-09 07:44:45 C 10 11 47.80 +39 32 05.0 U G96
2018-04-05 20:02:59 C 08 19 40.18 +38 25 38.6 U 204
2018-04-05 20:23:12 C 08 19 39.55 +38 25 23.8 U 204
2018-04-05 20:43:22 C 08 19 38.97 +38 25 08.4 U 204
2018-04-08 04:03:44 C 08 18 24.73 +37 43 12.9 U G96
2018-04-08 04:11:09 C 08 18 24.55 +37 43 07.4 U G96
2018-04-08 04:18:32 C 08 18 24.36 +37 43 01.7 U G96
2018-04-08 04:25:56 C 08 18 24.21 +37 42 55.7 U G96
2018-07-28 00:45:03 S 04 12 40.550 -50 24 23.58 L C51
2018-07-28 05:27:48 S 04 10 51.103 -50 27 22.57 L C51
2018-07-28 07:01:52 S 04 10 14.645 -50 28 21.47 L C51
2018-07-28 07:02:03 S 04 10 14.611 -50 28 22.37 L C51
2018-08-23 15:14:41 S 00 49 02.328 -45 17 32.06 V C57
2018-08-23 15:14:41 s 1 +114003.11 0 -34948.263 9530.0 C57
2018-08-23 17:14:41 S 00 48 30.262 -45 15 49.72 V C57
2018-08-23 17:14:41 s 1 +120162.94 9 -22776.441 3570.0 C57
2018-08-23 18:44:41 S 00 48 06.624 -45 14 28.79 V C57
2018-08-23 18:44:41 s 1 +124179.02 4 -13526.801 3250.0 C57
2018-08-23 19:14:41 S 00 47 58.034 -45 14 00.71 V C57
2018-08-23 19:14:41 s 1 +125408.18 0 -10429.740 9340.0 C57
2018-08-23 19:44:41 S 00 47 49.913 -45 13 32.09 V C57
2018-08-23 19:44:41 s 1 +126584.32 4 - 7328.291 9600.0 C57
2018-08-23 20:14:41 S 00 47 41.983 -45 13 03.97 V C57
2018-08-23 20:14:41 s 1 +127708.51 9 - 4223.855 7940.0 C57
2018-08-23 21:44:41 S 00 47 19.109 -45 11 39.77 V C57
2018-08-23 21:44:41 s 1 +130779.98 3 + 5094.498 2140.0 C57
2018-08-23 22:44:41 S 00 47 03.355 -45 10 40.76 V C57
2018-08-23 22:44:41 s 1 +132587.18 6 +11299.303 4890.0 C57
2018-08-23 23:14:41 S 00 46 55.354 -45 10 11.39 V C57
2018-08-23 23:14:41 s 1 +133421.75 8 +14396.333 9260.0 C57
2018-08-24 01:14:41 S 00 46 23.921 -45 08 11.33 V C57
2018-08-24 01:14:41 s 1 +136323.25 3 +26727.647 9490.0 C57
2018-08-24 06:14:41 S 00 45 06.360 -45 02 51.47 V C57
2018-08-24 06:14:41 s 1 +140846.66 5 +56916.172 3780.0 C57
2018-08-24 06:44:41 S 00 44 56.971 -45 02 15.58 V C57
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)