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JPL Small-Body Database Browser
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2001 Einstein (1973 EB)
Classification: Inner Main-belt Asteroid          SPK-ID: 2002001
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0987123563070167 4.8357e-08  
a 1.933539292509087 5.4424e-09 au
q 1.742675072933313 9.4022e-08 au
i 22.6811132939924 5.6563e-06 deg
node 357.0752510289838 9.1252e-06 deg
peri 217.8630078716097 2.8126e-05 deg
M 10.44038480670428 2.9619e-05 deg
tp 2458572.019872112287
(2019-Mar-29.51987211)
8.0755e-05 TDB
period 982.0371786481338
2.69
4.1462e-06
1.135e-08
d
yr
n .3665848990519623 1.5478e-09 deg/d
Q 2.12440351208486 5.9796e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1682  
   data-arc span      17005 days (46.56 yr)  
   first obs. used      1973-03-05  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39342  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:11:16  

Additional Information
 Earth MOID = .767434 au 
 Jupiter MOID = 2.87424 au 
 T_jup = 3.811 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456653.5 (2013-Dec-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09854432915387114 4.8302e-08  
q 1.742900820757264 9.3913e-08 au
tp 2456608.016943722614
(2013-Nov-11.51694372)
7.8284e-05 TDB
node 357.0905150877099 9.1254e-06 deg
peri 217.8483338799249 2.8198e-05 deg
i 22.68144834739516 5.6562e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1682  
   data-arc span      17005 days (46.56 yr)  
   first obs. used      1973-03-05  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39342  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:11:16  

Additional Information
 Jupiter MOID = 2.87424 au 
 T_jup = 3.811 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.333056177990163E-15 -4.529949230790915E-15 -2.156674692453742E-12 -1.903527475649601E-14 -6.929967524581707E-13 6.045785768038779E-15
q -4.529949230790915E-15 8.81968858241952E-15 4.272743341689248E-12 3.715078038534709E-14 1.373962935421357E-12 -1.106504259062444E-14
tp -2.156674692453742E-12 4.272743341689248E-12 6.128385461500186E-9 2.388137664391862E-11 2.09338177973125E-9 9.518323553425907E-12
node -1.903527475649601E-14 3.715078038534709E-14 2.388137664391862E-11 8.32727482022781E-11 -6.804593339861186E-11 -2.584298021765181E-13
peri -6.929967524581707E-13 1.373962935421357E-12 2.09338177973125E-9 -6.804593339861186E-11 7.951356476248777E-10 3.501667105766699E-12
i 6.045785768038779E-15 -1.106504259062444E-14 9.518323553425907E-12 -2.584298021765181E-13 3.501667105766699E-12 3.19922248150051E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.85   n/a PDS3 (MPC 17264)  
diameter diameter 3.975 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.487 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2005) Minor Planet Bull. 32, 54-58.]
[Warner, B.D. (2008) Minor Planet Bull. 35, 163-167.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 57-64.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2013) Minor Planet Bull. 40, 71-80.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.810   0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.720   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=24.38, mean=26.43, max.=28.49) deg.
U-B UB 0.261   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=24.38, mean=26.43, max.=28.49) deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Xe   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2001 Einstein (1973 EB)          Discovered 1973-Mar-05 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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