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7644 Cslewis (1988 VR5)
Classification: Main-belt Asteroid          SPK-ID: 2007644
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1350910785184594 3.5439e-08  
a 2.583637459933399 9.9212e-09 au
q 2.234611088970303 9.1342e-08 au
i 13.82960009852226 4.7463e-06 deg
node 219.6382326373196 1.2364e-05 deg
peri 139.7426442065708 1.9866e-05 deg
M 251.1211497612261 1.5999e-05 deg
tp 2459459.261338562041
(2021-Sep-01.76133856)
6.8413e-05 TDB
period 1516.861002115178
4.15
8.7372e-06
2.392e-08
d
yr
n .2373322272100081 1.367e-09 deg/d
Q 2.932663830896495 1.1262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1993  
   data-arc span      11547 days (31.61 yr)  
   first obs. used      1988-11-04  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44717  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:42:44  

Additional Information
 Earth MOID = 1.25129 au 
 Jupiter MOID = 2.58832 au 
 T_jup = 3.370 
[ 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 13.6   n/a MPO473871  
diameter diameter 5.790 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.31 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.174   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7644 Cslewis           Discovered 1988 Nov. 4 by A. Mrkos at Klet.
Clive Staples Lewis (1898-1963) was a British scholar and novelist, author of the famous children's fantasy The Chronicles of Narnia. In his three science-fiction novels, Space Trilogy, he described a cosmic struggle betwen good and evil in the solar system. The name was suggested by M. Kočer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1988 VR5 = 1991 JZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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