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2542 Calpurnia (1980 CF)
Classification: Main-belt Asteroid          SPK-ID: 2002542
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07361799225032395 5.3736e-08  
a 3.13116716234258 2.7571e-08 AU
q 2.900656922450775 1.6873e-07 AU
i 4.620736929505954 5.3403e-06 deg
node 145.721109428172 7.1439e-05 deg
peri 47.41046108114006 8.144e-05 deg
M 71.59879695661363 3.6581e-05 deg
tp 2456598.004497583585
(2013-Nov-01.50449758)
0.00020736 JED
period 2023.754406903132
5.54
2.6729e-05
7.318e-08
d
yr
n .1778871975631139 2.3495e-09 deg/d
Q 3.361677402234385 2.96e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      21967 days (60.14 yr)  
   first obs. used      1954-07-03  
   last obs. used      2014-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47304  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:41:30  

Additional Information
 Earth MOID = 1.90421 AU 
 T_jup = 3.204 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.5 mag n/a MPO263368  
diameter diameter 27.61 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
geometric albedo albedo 0.0639   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

2542 Calpurnia (1980 CF)          Discovered 1980-Feb-11 by Bowell, E. at Flagstaff (AM) (688)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1980 CF = 1972 XN2 = 1976 OE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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