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2981 Chagall (1981 EE20)
Classification: Main-belt Asteroid          SPK-ID: 2002981
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1702887853055929 5.2019e-08  
a 3.15261069697605 2.5718e-08 AU
q 2.61575645084658 1.657e-07 AU
i .8645509145315093 5.9046e-06 deg
node 185.8965582677269 0.00035642 deg
peri 98.71336605545638 0.0003569 deg
M 241.0818665780071 2.3288e-05 deg
tp 2457475.882070372754
(2016-Mar-28.38207037)
0.00013541 JED
period 2044.579227218388
5.60
2.5018e-05
6.85e-08
d
yr
n .1760753485154856 2.1545e-09 deg/d
Q 3.68946494310552 3.0097e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1438  
   data-arc span      21843 days (59.80 yr)  
   first obs. used      1954-06-07  
   last obs. used      2014-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52791  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:42:50  

Additional Information
 Earth MOID = 1.59892 AU 
 T_jup = 3.184 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO259358  
rotation period rot_per 0.11232 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

2981 Chagall (1981 EE20)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring (413)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 EE20 = 1954 LF = 1977 RN3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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