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3275 Oberndorfer (1982 HE1)
Classification: Main-belt Asteroid          SPK-ID: 2003275
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1800130235546614 3.4928e-08  
a 2.333536421471665 8.5547e-09 au
q 1.913469474667626 8.0683e-08 au
i 8.572277543591996 4.0691e-06 deg
node 45.33407449045052 2.0328e-05 deg
peri 192.899653004467 2.2132e-05 deg
M 239.0991576704745 9.7864e-06 deg
tp 2459437.767428260916
(2021-Aug-11.26742826)
3.6457e-05 TDB
period 1302.027935792856
3.56
7.1598e-06
1.96e-08
d
yr
n .276491763428088 1.5204e-09 deg/d
Q 2.753603368275705 1.0095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2952  
   data-arc span      20682 days (56.62 yr)  
   first obs. used      1964-03-16  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43179  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:39  

Additional Information
 Earth MOID = .902839 au 
 Jupiter MOID = 2.25253 au 
 T_jup = 3.533 
[ 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 13.4   n/a MPO502184  
diameter diameter 10.831 km 0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.081   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3275 Oberndorfer (1982 HE1)          Discovered 1982-Apr-25 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 HE1 = 1939 FJ = 1964 EE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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