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JPL Small-Body Database Browser
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91270 (1999 CA138)
Classification: Main-belt Asteroid          SPK-ID: 2091270
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 .2194764600846458 4.01e-08  
a 2.419458101885321 9.1313e-09 au
q 1.888444002360415 9.4716e-08 au
i 2.140677890227742 5.0165e-06 deg
node 325.3253754937833 9.2083e-05 deg
peri 326.8287433653986 9.2731e-05 deg
M 109.1350207125871 9.4698e-06 deg
tp 2458583.786836105263
(2019-Apr-10.28683611)
3.5785e-05 TDB
period 1374.597613328745
3.76
7.7818e-06
2.131e-08
d
yr
n .2618948239901414 1.4826e-09 deg/d
Q 2.950472201410228 1.1135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      687  
   data-arc span      9500 days (26.01 yr)  
   first obs. used      1993-11-21  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57223  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:16:19  

Additional Information
 Earth MOID = .872728 au 
 Jupiter MOID = 2.24717 au 
 T_jup = 3.480 
[ 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 16.0   n/a MPO436410  
diameter diameter 3.732 km 0.471 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91270 (1999 CA138)          Discovered 1999-Feb-09 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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