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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2213853320528996 3.2411e-08  
a 3.177741825014628 1.0296e-08 au
q 2.474236395905377 1.0373e-07 au
i 4.496849482098911 3.4278e-06 deg
node 58.51216913571365 4.6517e-05 deg
peri 333.5437803729578 4.7017e-05 deg
M 121.7484023995371 7.7635e-06 deg
tp 2458500.759336684495
(2019-Jan-17.25933668)
4.3307e-05 TDB
period 2069.075518271767
5.66
1.0056e-05
2.753e-08
d
yr
n .1739907494051723 8.4558e-10 deg/d
Q 3.881247254123878 1.2575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3347  
   data-arc span      38073 days (104.24 yr)  
   first obs. used      1916-12-27  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:02:23  

Additional Information
 Earth MOID = 1.48024 au 
 Jupiter MOID = 1.56197 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 10.80   n/a MPCxxxxx  
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. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2008) Minor Planet Bull. 35, 60-61.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

[ show close-approach data ]
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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