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
1977-04-24 08:48:00 A 14 01 23.38 -13 07 46.5 675
1977-04-24 10:02:59 A 14 01 08.00 -13 08 45.2 675
1977-04-25 07:30:00 A 13 57 01.37 -13 25 46.0 675
1977-04-25 08:44:59 A 13 56 46.66 -13 26 42.1 675
1977-04-26 07:14:59 A 13 52 40.70 -13 43 26.2 688
1977-04-26 08:12:29 A 13 52 29.73 -13 44 08.0 688
1977-04-26 08:33:59 A 13 52 25.68 -13 44 19.5 675
1977-04-26 08:53:59 A 13 52 22.17 -13 44 32.3 675
1977-05-16 03:40:01 A 13 05 00.79 -17 00 33.6 A 801
1977-05-17 04:23:14 A 13 04 05.03 -17 06 40.5 15.0 675
1977-05-17 04:44:34 A 13 04 03.17 -17 06 48.0 A 801
1977-05-18 02:35:07 A 13 03 19.31 -17 12 07.9 A 801
1977-05-18 05:08:00 A 13 03 14.65 -17 12 46.6 16.0 688
1977-05-18 05:48:59 A 13 03 13.16 -17 12 55.4 688
1977-05-21 10:21:23 A 13 01 17.78 -17 30 25.4 16.7 485
1977-05-21 11:25:37 A 13 01 15.04 -17 30 39.0 485
1977-06-13 04:44:30 A 13 07 36.91 -19 36 41.7 675
1977-06-15 08:14:47 A 13 09 28.65 -19 49 07.1 474
1977-06-15 09:31:49 A 13 09 31.50 -19 49 28.1 19.1 474
1978-04-10 01:15:12 A 04 58 42.70 +32 35 28.3 A 801
1978-05-09 04:22:29 A 08 21 37.15 +25 11 59.0 675
1978-05-10 04:22:29 A 08 27 28.06 +24 39 15.4 675
1984-07-25 16:14:19 A 00 53 13.34 -28 52 17.3 474
1984-07-25 16:53:19 A 00 53 18.01 -28 52 36.5 474
1984-08-23 17:21:01 A 03 08 21.60 -36 05 37.6 474
1984-08-23 17:56:00 A 03 08 32.48 -36 05 56.6 474
1984-08-25 17:35:11 A 03 24 46.05 -36 28 19.4 474
1984-08-25 17:56:41 A 03 24 53.33 -36 28 28.5 474
1986-04-14 11:05:52 A 17 37 00.57 -26 47 04.2 B 691
1986-04-14 11:12:52 A 17 37 00.14 -26 47 11.1 B 691
1994-06-17 17:52:49 C 21 39 45.25 -38 23 42.6 413
1994-06-17 17:55:07 C 21 39 45.27 -38 23 44.6 413
1994-07-06 14:32:21 21 31 37.88 -46 30 11.1 413
1994-07-06 16:22:22 21 31 30.61 -46 32 28.1 413
1994-08-26 12:48:29 C 18 15 25.62 -54 49 58.2 413
1994-08-26 12:52:04 C 18 15 25.22 -54 49 55.4 413
1994-09-18 08:47:27 C 17 50 20.84 -46 57 14.2 413
1994-09-18 08:49:40 C 17 50 20.80 -46 57 12.4 413
1995-05-18 09:57:17 C 18 13 02.41 -39 45 05.1 z 689
1995-06-19 14:44:50 C 16 19 50.52 -44 20 55.6 413
1995-06-19 14:48:04 C 16 19 50.04 -44 20 54.8 413
1995-07-20 10:06:26 C 15 31 33.65 -39 21 14.1 413
1995-07-20 10:11:09 C 15 31 33.62 -39 21 12.5 413
1995-09-07 10:27:50 C 16 30 55.21 -35 35 30.3 413
1995-09-07 10:30:46 C 16 30 55.48 -35 35 29.9 413
1995-12-08 10:50:02 C 20 48 14.52 -20 42 36.5 413
1995-12-08 10:53:30 C 20 48 14.93 -20 42 33.0 413
1996-03-18 03:38:20 C 21 56 18.88 +50 04 14.7 z 557
1996-03-18 03:39:46 C 21 56 18.39 +50 04 20.5 z 557
1996-03-18 03:48:49 C 21 56 15.00 +50 05 00.7 z 557
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)