2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2015-05-07 01:57:08 C 10 35 38.07 +10 18 30.8 u H21
2015-05-07 02:01:27 C 10 35 38.68 +10 18 22.0 u H21
2015-05-07 02:03:36 C 10 35 38.97 +10 18 17.6 u H21
2015-05-08 01:34:57 C 10 39 03.07 +09 30 57.1 u H21
2015-05-08 01:38:30 C 10 39 03.55 +09 30 50.1 u H21
2015-05-08 01:42:27 C 10 39 04.09 +09 30 42.2 u H21
2015-05-08 01:46:25 C 10 39 04.63 +09 30 34.3 u H21
2015-05-08 01:50:06 C 10 39 05.13 +09 30 26.8 u H21
2015-05-08 01:53:23 C 10 39 05.57 +09 30 20.2 u H21
2015-05-08 01:56:24 C 10 39 05.98 +09 30 14.4 u H21
2015-05-10 03:53:57 C 10 45 58.69 +07 54 53.3 q G96
2015-05-10 04:00:33 C 10 45 59.53 +07 54 41.4 q G96
2015-05-10 04:07:08 C 10 46 00.37 +07 54 29.2 q G96
2015-05-10 04:13:44 C 10 46 01.22 +07 54 17.1 q G96
2015-05-11 12:52:15 C 10 50 17.80 +06 55 30.0 q D29
2015-05-11 13:12:34 C 10 50 20.31 +06 54 54.4 q D29
2015-05-11 13:32:53 C 10 50 22.79 +06 54 18.4 q D29
2015-05-13 01:48:51 C 10 54 57.47 +05 52 03.0 u H21
2015-05-13 01:51:28 C 10 54 57.79 +05 51 58.6 u H21
2015-05-13 01:53:58 C 10 54 58.07 +05 51 54.4 u H21
2015-05-13 01:56:28 C 10 54 58.39 +05 51 50.2 u H21
2015-05-13 01:58:58 C 10 54 58.67 +05 51 46.0 u H21
2015-05-13 02:01:28 C 10 54 58.97 +05 51 41.9 u H21
2015-05-13 02:03:59 C 10 54 59.27 +05 51 37.6 u H21
2015-05-13 02:06:36 C 10 54 59.58 +05 51 33.2 u H21
2015-05-13 02:09:36 C 10 54 59.94 +05 51 28.3 u H21
2015-05-13 21:04:00 C 10 57 18.36 +05 20 12.4 q 160
2015-05-13 21:06:46 C 10 57 18.70 +05 20 07.4 q 160
2015-05-13 21:09:34 C 10 57 19.01 +05 20 02.1 q 160
2015-05-14 01:58:49 C 10 57 54.45 +05 12 14.4 u H21
2015-05-14 02:01:43 C 10 57 54.78 +05 12 10.0 u H21
2015-05-14 02:04:55 C 10 57 55.14 +05 12 04.5 u H21
2015-05-14 02:07:36 C 10 57 55.46 +05 12 00.3 u H21
2015-05-14 02:09:52 C 10 57 55.73 +05 11 56.4 u H21
2015-05-19 02:02:28 C 11 11 38.73 +02 11 51.8 u H21
2015-05-19 02:11:47 C 11 11 39.63 +02 11 39.4 u H21
2015-05-19 02:14:41 C 11 11 39.92 +02 11 35.5 u H21
2015-05-19 02:17:38 C 11 11 40.23 +02 11 31.2 u H21
2015-05-19 02:20:28 C 11 11 40.50 +02 11 27.4 u H21
2015-05-19 07:10:27 C 11 12 11.882 +02 04 50.46 L F52
2015-05-19 07:32:47 C 11 12 14.186 +02 04 19.55 L F52
2015-05-19 07:55:11 C 11 12 16.508 +02 03 48.52 L F52
2015-05-19 08:17:29 C 11 12 18.814 +02 03 17.73 L F52
2015-05-20 02:31:17 C 11 14 17.03 +01 38 15.6 u H21
2015-05-20 02:33:45 C 11 14 17.29 +01 38 12.4 u H21
2015-05-20 02:36:20 C 11 14 17.54 +01 38 08.8 u H21
2015-05-20 02:44:12 C 11 14 18.35 +01 37 58.1 u H21
2015-05-20 02:46:47 C 11 14 18.62 +01 37 54.4 u H21
2015-05-20 02:49:09 C 11 14 18.86 +01 37 51.3 u H21
2015-05-20 02:51:25 C 11 14 19.09 +01 37 48.4 u H21
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)