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2810 Lev Tolstoj (1978 RU5)
Classification: Main-belt Asteroid          SPK-ID: 2002810
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1535364521944305 2.2711e-08  
a 2.605857727351648 9.1447e-09 au
q 2.205763576970634 6.222e-08 au
i 12.7050034639483 5.326e-07 deg
node 193.1718314462206 2.6596e-06 deg
peri 259.8562524831867 6.4567e-06 deg
M 310.7037853852719 8.8711e-06 deg
tp 2459410.895065039506
(2021-Jul-15.39506504)
3.8207e-05 TDB
period 1536.471390474527
4.21
8.0879e-06
2.214e-08
d
yr
n .2343030935895375 1.2334e-09 deg/d
Q 3.005951877732661 1.0549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2501  
   data-arc span      24620 days (67.41 yr)  
   first obs. used      1953-10-10  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:18:34  

Additional Information
 Earth MOID = 1.2628 au 
 Jupiter MOID = 2.31655 au 
 T_jup = 3.361 
[ 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 12.54   n/a E2021B10  
diameter diameter 7.910 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.257   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2810 Lev Tolstoj (1978 RU5)          Discovered 1978-Sep-13 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 RU5 = 1957 UW = 1976 GG2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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