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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2194764528203101 4.0074e-08  
a 2.419458104946491 9.1286e-09 au
q 1.888444022325485 9.4644e-08 au
i 2.140679656534274 5.0067e-06 deg
node 325.3253927370616 9.2073e-05 deg
peri 326.8287335192044 9.272e-05 deg
M 109.1350146214791 9.4687e-06 deg
tp 2458583.786858572247
(2019-Apr-10.28685857)
3.5779e-05 TDB
period 1374.597615937517
3.76
7.7795e-06
2.13e-08
d
yr
n .2618948234931057 1.4822e-09 deg/d
Q 2.950472187567497 1.1132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      691  
   data-arc span      9527 days (26.08 yr)  
   first obs. used      1993-11-21  
   last obs. used      2019-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:40:31  

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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