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3895 Earhart (1987 DE)
Classification: Main-belt Asteroid          SPK-ID: 2003895
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180401624222229 3.3865e-08  
a 2.351959338488294 7.9315e-09 au
q 1.927662053720366 7.7713e-08 au
i 24.34339827537337 3.5754e-06 deg
node 150.801215805242 1.0094e-05 deg
peri 8.760948825381742 1.5453e-05 deg
M 73.4909899773308 1.2159e-05 deg
tp 2458731.548025099021
(2019-Sep-05.04802510)
4.4071e-05 TDB
period 1317.4772988392
3.61
6.6644e-06
1.825e-08
d
yr
n .273249490004259 1.3822e-09 deg/d
Q 2.776256623256222 9.3624e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2616  
   data-arc span      23871 days (65.36 yr)  
   first obs. used      1955-03-27  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36373  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:08:51  

Additional Information
 Earth MOID = .939777 au 
 Jupiter MOID = 2.22266 au 
 T_jup = 3.417 
[ 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 12.0   n/a MPO384788  
diameter diameter 10.384 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.5645 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bull. 36, 172-176.]
[Aznar Macias, A.; Carreno Garcerain, A.; Arce Masego, E.; Brines Rodriques, P.; et al. (2016) Minor Planet Bull. 43, 257-263.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Skiff, B.A. (2016) Posting on CALL web site. http://www.minorplanet.info/call.html]
geometric albedo albedo 0.281   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3895 Earhart (1987 DE)          Discovered 1987-Feb-23 by Shoemaker, C. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1987 DE = 1969 EB = 1980 GS = 1981 PO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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