Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
2060 Chiron (1977 UB)
Classification: Centaur          SPK-ID: 2002060
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 112 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3827272654609575 8.9004e-08  
a 13.6394652406201 1.4319e-06 au
q 8.419270006727787 8.5194e-07 au
i 6.947150670769211 6.2678e-06 deg
node 209.2159623989599 5.9891e-05 deg
peri 339.5371177441153 6.1045e-05 deg
M 145.9779073334931 2.8204e-05 deg
tp 2450139.808630086361
0.00041899 JED
period 18399.00942704273
n .01956627075101525 3.0813e-09 deg/d
Q 18.85966047451241 1.98e-06 au
  Orbit Determination Parameters
   # obs. used (total)      1476  
   data-arc span      44100 days (120.74 yr)  
   first obs. used      1895-04-24  
   last obs. used      2016-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60728  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 17:51:30  

Additional Information
 Earth MOID = 7.42066 au 
 Jupiter MOID = 2.99293 au 
 T_jup = 3.351 
[ 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 6.0 mag n/a MPO350816  
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 LCDB (Rev. 2016-February); Warner et al., 2009 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
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1977 UB = 95P 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-02 10:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin