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4561 Lemeshev (1978 RY5)
Classification: Main-belt Asteroid          SPK-ID: 2004561
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1573979510354683 1.7523e-08  
a 2.574298606630048 8.3232e-09 au
q 2.169109280593017 4.5168e-08 au
i 9.487384252832895 1.1116e-06 deg
node 10.14290122953307 3.3626e-06 deg
peri 54.98633843973617 5.9035e-06 deg
M 43.56080062597275 4.5177e-06 deg
tp 2459017.950704261249
(2020-Jun-17.45070426)
1.8647e-05 TDB
period 1508.644136966729
4.13
7.3166e-06
2.003e-08
d
yr
n .2386248626689485 1.1573e-09 deg/d
Q 2.979487932667078 9.6332e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2256  
   data-arc span      24684 days (67.58 yr)  
   first obs. used      1953-08-14  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42024  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:30:20  

Additional Information
 Earth MOID = 1.19657 au 
 Jupiter MOID = 2.40722 au 
 T_jup = 3.391 
[ 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 13.5   n/a MPO448959  
diameter diameter 10.183 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.089   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4561 Lemeshev (1978 RY5)          Discovered 1978-Sep-13 by Chernykh, N. S. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 RY5 = 1970 WZ = 1980 DK5 = 1986 RH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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