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JPL Small-Body Database Browser
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4815 Anders (1981 EA28)
Classification: Main-belt Asteroid          SPK-ID: 2004815
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352904992961823 4.8234e-08  
a 2.359711388994966 9.384e-09 au
q 2.04046485698295 1.1317e-07 au
i 7.553187588025364 5.2021e-06 deg
node 7.174304745201019 2.6189e-05 deg
peri 355.9214439690314 2.9292e-05 deg
M 1.513419940469607 1.3369e-05 deg
tp 2458594.933993477979
(2019-Apr-21.43399348)
4.9158e-05 TDB
period 1323.99626458325
3.62
7.8978e-06
2.162e-08
d
yr
n .2719040903890435 1.6219e-09 deg/d
Q 2.678957921006983 1.0654e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      14596 days (39.96 yr)  
   first obs. used      1979-11-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51265  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:39:39  

Additional Information
 Earth MOID = 1.03733 au 
 Jupiter MOID = 2.76939 au 
 T_jup = 3.528 
[ 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 13.8   n/a MPO350840  
diameter diameter 4.172 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.336   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4815 Anders           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Edward Anders (b. 1926), professor emeritus at the University of Chicago, has made many seminal contributions to the field of meteoritics. His work provided early evidence that meteorites are derived from minor planets rather than a larger fragmented planet and that meteoritic organics are of abiotic origin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1981 EA28 = 1979 VO1 = 1986 VX8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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