+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8405 Asbolus (1995 GO) Classification: Centaur          SPK-ID: 2008405 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 47 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6218872528276177 5.3444e-07   a 18.00730935472406 2.3238e-05 au q 6.808793209297653 1.2684e-06 au i 17.61720242410285 1.1707e-05 deg node 5.890249581744621 2.6534e-05 deg peri 290.4257166849237 3.5155e-05 deg M 86.45061645803354 0.0001763 deg tp 2452497.993267421814 (2002-Aug-11.49326742) 0.00079005 TDB period 27910.76018410422 76.42 0.054028 0.0001479 d yr n .0128982513419691 2.4968e-08 deg/d Q 29.20582550015046 3.769e-05 au   Orbit Determination Parameters    # obs. used (total)      503      data-arc span      8571 days (23.47 yr)      first obs. used      1995-03-28      last obs. used      2018-09-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      1      norm. resid. RMS      .52324      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 20:34:57   Additional Information  Earth MOID = 5.83971 au   Jupiter MOID = 2.3001 au   T_jup = 3.066  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.1   n/a MPO210403   diameter diameter 66 km 8 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)   rotation period rot_per 8.9351 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Brown, W.R.; Luu, J.X. (1997) Icarus 126, 218-224.] [Davies, J.K.; McBride, N.; Ellison, S.L.; Green, S.; Ballantyne, D.R. (1998) Icarus 134, 213-227.] [Brucker, M.; Romanishin, W.J.; Tegler, S.C.; Consolmagno, S.J.; Grundy, W.M. (2008) Bull. Amer. Astron. Soc. 40, 483 (47.09)] geometric albedo albedo 0.13   0.03 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)   8405 Asbolus           Discovered 1995 Apr. 5 by Spacewatch. The "black one", Asbolus was the centaur who supposedly made forecasts from the flight formations of birds. He caused the battle between the centaurs and Heracles and thus was indirectly responsible for the deaths of Pholus and Chiron. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990928/MPCPages.arc Last Updated: 2010-06-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2021-Apr-23 09:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin