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JPL Small-Body Database Browser
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2981 Chagall (1981 EE20)
Classification: Main-belt Asteroid          SPK-ID: 2002981
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1720336207167776 2.9919e-08  
a 3.149666656107489 1.4762e-08 au
q 2.607818097206412 9.7593e-08 au
i .8660190594810359 3.9613e-06 deg
node 185.8668597248351 0.00022925 deg
peri 99.20273249786483 0.00022954 deg
M 268.2206855681753 1.2034e-05 deg
tp 2459521.020243915867
(2021-Nov-02.52024392)
6.9118e-05 TDB
period 2041.71592444076
5.59
1.4353e-05
3.93e-08
d
yr
n .1763222766157376 1.2396e-09 deg/d
Q 3.691515215008565 1.7301e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2389  
   data-arc span      23980 days (65.65 yr)  
   first obs. used      1954-06-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50159  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:35:46  

Additional Information
 Earth MOID = 1.59156 au 
 Jupiter MOID = 1.47257 au 
 T_jup = 3.185 
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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 12.6   n/a MPO384778  
diameter diameter 15.489 km 0.617 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.117   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1981 EE20 = 1954 LF = 1977 RN3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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