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2060 Chiron (1977 UB)
Classification: Centaur          SPK-ID: 2002060
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 94 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3816057979122459 1.0412e-07  
a 13.64161939534817 1.5023e-06 AU
q 8.435898341171161 9.573e-07 AU
i 6.935156621723999 7.8213e-06 deg
node 209.3041506171555 7.992e-05 deg
peri 339.3200817053936 8.1106e-05 deg
M 130.6609873685861 2.6036e-05 deg
tp 2450121.049211880484
(1996-Feb-07.54921188)
0.00050919 JED
period 18403.36838217669
50.39
0.0030401
8.323e-06
d
yr
n .01956163635504102 3.2314e-09 deg/d
Q 18.84734044952517 2.0756e-06 AU
  Orbit Determination Parameters
   # obs. used (total)      1216  
   data-arc span      43286 days (118.51 yr)  
   first obs. used      1895-04-24  
   last obs. used      2013-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61061  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Nov-21 01:45:27  

Additional Information
 Earth MOID = 7.43839 AU 
 T_jup = 3.353 
[ 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 6.2 mag n/a MPO267715  
diameter diameter 166 km n/a Dunham occultation list: Duham 1998 Yeomans E-mail 2001-Apr-04
rotation period rot_per 5.918 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Bus, S.J.; Bowell, E.; Harris, A.W.; Hewitt, A.V. (1989) Icarus 77, 223-238.]
[Luu, J.X.; Jewitt, D.C. (1990) Astron. J. 100, 913-932.]
[Marcialis, R.L.; Buratti, B.J. (1993) Icarus 104, 234-243.]
[Lazzaro, D.; Florczak, M.A.; Angeli, C.A.; Carvano, J.M.; et al. (1997) Planet. Space Sci. 45, 1607-1614.]
geometric albedo albedo 0.15   0.03 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)  
B-V BV .704 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=1.81, mean=2.51, max.=2.88) deg.
U-B UB .283 mag .060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=1.81, mean=2.51, max.=2.88) deg.
Tholen spectral type spec_T B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Cb   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2060 Chiron (1977 UB)          Discovered 1977-Oct-18 by Kowal, C. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1977 UB = 95P 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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