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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1350390083830514 1.273e-08  
a 2.584747866008561 9.4811e-09 au
q 2.235706077262556 3.6048e-08 au
i 13.82553462253424 9.2528e-07 deg
node 219.6210849744977 1.9397e-06 deg
peri 139.570230006821 7.9487e-06 deg
M 298.7588123139209 9.4351e-06 deg
tp 2459458.706284807183
(2021-Sep-01.20628481)
4.0279e-05 TDB
period 1517.838991089904
4.16
8.3514e-06
2.286e-08
d
yr
n .2371793069708252 1.305e-09 deg/d
Q 2.933789654754565 1.0761e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2146  
   data-arc span      11637 days (31.86 yr)  
   first obs. used      1988-11-04  
   last obs. used      2020-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 20:00:18  

Additional Information
 Earth MOID = 1.251 au 
 Jupiter MOID = 2.58892 au 
 T_jup = 3.369 
[ 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 13.62   n/a E2021B10  
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. 2020-October); 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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