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JPL Small-Body Database Browser
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100014 (1989 SR4)
Classification: Main-belt Asteroid          SPK-ID: 2100014
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788253656557754 1.1026e-07  
a 2.525279177636993 8.0105e-09 au
q 2.073695205313141 2.812e-07 au
i 4.780244438554682 6.9096e-06 deg
node 43.82484723845968 7.0399e-05 deg
peri 356.195550595985 7.7395e-05 deg
M 215.8822592784718 3.1619e-05 deg
tp 2459587.282925385220
(2022-Jan-07.78292539)
0.00013026 TDB
period 1465.758844685553
4.01
6.9744e-06
1.909e-08
d
yr
n .2456065684374092 1.1686e-09 deg/d
Q 2.976863149960844 9.443e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      15146 days (41.47 yr)  
   first obs. used      1977-10-18  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56172  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:24:30  

Additional Information
 Earth MOID = 1.08178 au 
 Jupiter MOID = 2.43708 au 
 T_jup = 3.427 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO337983  
rotation period rot_per 12.511 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

100014 (1989 SR4)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1989 SR4 = 1977 UW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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