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JPL Small-Body Database Browser
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964 Subamara (A921 UL)
Classification: Main-belt Asteroid          SPK-ID: 2000964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201918384398705 3.9538e-08  
a 3.047920822999956 1.3449e-08 au
q 2.681585615864428 1.1931e-07 au
i 9.050597061899726 4.4541e-06 deg
node 30.68145747417812 2.4171e-05 deg
peri 9.634977975728386 2.9473e-05 deg
M 169.1728265708435 1.6675e-05 deg
tp 2458087.160893596803
(2017-Nov-29.66089360)
8.8669e-05 TDB
period 1943.586833476831
5.32
1.2864e-05
3.522e-08
d
yr
n .1852245517407656 1.2259e-09 deg/d
Q 3.414256030135484 1.5065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      41738 days (114.27 yr)  
   first obs. used      1905-10-26  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:41:47  

Additional Information
 Earth MOID = 1.68983 au 
 Jupiter MOID = 2.02017 au 
 T_jup = 3.208 
[ 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 10.8   n/a MPO473775  
diameter diameter 19.835 km 0.536 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.868 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bull. 39, 51-55.]
[Alkema, M.S. (2013) Minor Planet Bull. 40, 133-137.]
[Polakis, T. (2018) Minor Planet Bull. 45, 199-203.]
geometric albedo albedo 0.236   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

964 Subamara (A921 UL)          Discovered 1921-Oct-27 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A921 UL = A905 UL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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