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JPL Small-Body Database Browser
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2160 Spitzer (1956 RL)
Classification: Main-belt Asteroid          SPK-ID: 2002160
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09985682898462336 3.1777e-08  
a 2.899952933023327 1.3691e-08 au
q 2.61037282892696 9.5967e-08 au
i 2.860706861974594 3.3625e-06 deg
node 134.2492386162758 6.9966e-05 deg
peri 207.6071419149629 7.2097e-05 deg
M 325.1644535195076 1.8639e-05 deg
tp 2459175.044021483196
9.3849e-05 TDB
period 1803.785330858472
n .1995802903157362 1.4134e-09 deg/d
Q 3.189533037119694 1.5059e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2742  
   data-arc span      23447 days (64.19 yr)  
   first obs. used      1955-05-22  
   last obs. used      2019-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46341  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:14:13  

Additional Information
 Earth MOID = 1.60239 au 
 Jupiter MOID = 2.16641 au 
 T_jup = 3.278 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.1   n/a MPO473793  
diameter diameter 13.601 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.9 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Polishook, D.; Brosch, N. (2008) ACM 2008 poster.]
geometric albedo albedo 0.138   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

2160 Spitzer (1956 RL)          Discovered 1956-Sep-07 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1956 RL = 1956 SJ = 1966 RN = 1971 UV1 = 1976 SX2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Feb-25 13:24 UT
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