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2650 Elinor (1931 EG)
Classification: Main-belt Asteroid          SPK-ID: 2002650
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1972482549698848 1.9269e-08  
a 2.636698696653493 1.1064e-08 au
q 2.116614479857222 5.0639e-08 au
i 13.92148432819848 1.308e-06 deg
node 332.3419532156195 2.2102e-06 deg
peri 23.6647660821993 7.5743e-06 deg
M 146.9315404954652 6.5166e-06 deg
tp 2458562.233993589983
(2019-Mar-19.73399359)
2.6135e-05 TDB
period 1563.828715963799
4.28
9.8433e-06
2.695e-08
d
yr
n .2302042393294521 1.449e-09 deg/d
Q 3.156782913449764 1.3247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2458  
   data-arc span      32899 days (90.07 yr)  
   first obs. used      1931-02-25  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37445  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:24:51  

Additional Information
 Earth MOID = 1.11592 au 
 Jupiter MOID = 2.29925 au 
 T_jup = 3.328 
[ 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 11.24   n/a MPCxxxxx  
diameter diameter 12.538 km 0.641 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.762 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pligge, Z.; Hall, B.; Ditteon, R. (2011) Minor Planet Bull. 38, 137-138.]
[Stephens, R.D. (2011) Minor Planet Bull. 38, 23-24.]
geometric albedo albedo 0.238   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2650 Elinor (1931 EG)          Discovered 1931-Mar-14 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1931 EG = 1931 DF = 1933 SX = 1937 PJ = 1950 RJ1 = 1950 RN = 1950 SO = 1950 TQ4 = 1954 NG = 1978 EF6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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