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JPL Small-Body Database Browser
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959 Arne (A921 SE)
Classification: Main-belt Asteroid          SPK-ID: 2000959
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2210004114356469 3.7571e-08  
a 3.178397598368233 1.2614e-08 au
q 2.475970421422781 1.2201e-07 au
i 4.497182193804789 3.984e-06 deg
node 58.52862247368742 4.8992e-05 deg
peri 333.6139020773755 4.9522e-05 deg
M 17.33246990245967 8.0887e-06 deg
tp 2458500.851970146112
(2019-Jan-17.35197015)
4.6254e-05 TDB
period 2069.716027160605
5.67
1.2321e-05
3.373e-08
d
yr
n .1739369050032799 1.0354e-09 deg/d
Q 3.880824775313684 1.5401e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2623  
   data-arc span      37563 days (102.84 yr)  
   first obs. used      1916-12-27  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47008  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:59:24  

Additional Information
 Earth MOID = 1.48248 au 
 Jupiter MOID = 1.55865 au 
 T_jup = 3.157 
[ 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 MPO452171  
diameter diameter 45.176 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 123.7 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2008) Minor Planet Bull. 35, 60-61.]
geometric albedo albedo 0.067   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

959 Arne (A921 SE)          Discovered 1921-Sep-30 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A921 SE = 1927 YD = 1952 DD2 = 1960 OF = A916 YB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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