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39755 (1997 CY21)
Classification: Main-belt Asteroid          SPK-ID: 2039755
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068452443757207 3.968e-08  
a 2.664248398469244 1.655e-08 au
q 2.379586127257175 1.0466e-07 au
i 13.43616981908889 4.4237e-06 deg
node 159.2521939913253 2.3861e-05 deg
peri 8.410621209192213 3.6067e-05 deg
M 123.3260408208379 2.6991e-05 deg
tp 2458456.357327098759
(2018-Dec-03.85732710)
0.00011818 TDB
period 1588.402262333452
4.35
1.48e-05
4.052e-08
d
yr
n .2266428401273741 2.1118e-09 deg/d
Q 2.948910669681312 1.8318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      8467 days (23.18 yr)  
   first obs. used      1997-02-13  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5759  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:45:50  

Additional Information
 Earth MOID = 1.38773 au 
 Jupiter MOID = 2.02507 au 
 T_jup = 3.337 
[ 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 15.1   n/a MPO344603  
diameter diameter 2.614 km 0.632 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.341   0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39755 (1997 CY21)          Discovered 1997-Feb-13 by Kobayashi, T. at Oizumi
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 CY21 = 2001 BY37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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