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2556 Louise (1981 CS)
Classification: Main-belt Asteroid          SPK-ID: 2002556
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03687759040328567 4.0262e-08  
a 2.162600362476765 6.6994e-09 au
q 2.08284887210335 8.6574e-08 au
i 2.788598010921381 4.5382e-06 deg
node 126.4696696175681 6.7966e-05 deg
peri 345.1777842039238 8.6299e-05 deg
M 27.48510503417555 5.2133e-05 deg
tp 2458511.813455407924
(2019-Jan-28.31345541)
0.00016822 TDB
period 1161.616665224622
3.18
5.3977e-06
1.478e-08
d
yr
n .3099129091182476 1.4401e-09 deg/d
Q 2.24235185285018 6.9464e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2406  
   data-arc span      15570 days (42.63 yr)  
   first obs. used      1976-09-24  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43548  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 21:36:56  

Additional Information
 Earth MOID = 1.09977 au 
 Jupiter MOID = 2.771 au 
 T_jup = 3.693 
[ 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 13.2   n/a MPO431524  
diameter diameter 6.179 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.808 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Alkema, M.S. (2013) Minor Planet Bull. 40, 133-137.]
[Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 234-239.]
geometric albedo albedo 0.204   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2556 Louise (1981 CS)          Discovered 1981-Feb-08 by Thomas, N. G. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 CS = 1951 WK2 = 1972 HV = 1976 SN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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