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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07472218499380463 3.8356e-08  
a 3.133558899601405 1.6814e-08 au
q 2.899412531816405 1.1929e-07 au
i 4.622023407280834 3.9798e-06 deg
node 145.6638249250956 5.1329e-05 deg
peri 49.06416069849268 5.8111e-05 deg
M 65.75423234751787 2.5856e-05 deg
tp 2458630.436347081073
(2019-May-26.93634708)
0.00014611 TDB
period 2026.073612215815
5.55
1.6307e-05
4.465e-08
d
yr
n .1776835737010987 1.4301e-09 deg/d
Q 3.367705267386404 1.8071e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2456  
   data-arc span      24138 days (66.09 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42825  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:52:51  

Additional Information
 Earth MOID = 1.90137 au 
 Jupiter MOID = 1.59397 au 
 T_jup = 3.203 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO309166  
diameter diameter 20.854 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.9 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.102   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Nov-29 02:18 00:02 Jupiter 1.87228354326523 1.87228240768167 1.87228467884848 2.94564484388252 2.78783464487588 2421561.595895292 2.30386977868115 54.7454843745262 24.1047711162798 50.8475853520015 1669384.95899286 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
1928-Feb-07 13:08 00:02 Jupiter 1.59370772798426 1.59370731668985 1.59370813927922 2.12226447935473 1.8550062293456 2425284.047123226 2.07820230027246 129.934774175257 16.6545764480984 84.7186452676562 2475541.07678493 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
1938-Apr-25 16:51 00:02 Jupiter 1.80448461646533 1.80448378554368 1.8044854473875 2.80417582103687 2.63146439766247 2429014.201864192 1.77039745703731 80.0668796455539 16.1368258098265 -72.1540744066998 2747700.60025499 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2000-Sep-29 01:31 < 00:01 Jupiter 1.80123038011083 1.8012299553979 1.80123080482376 2.66015225614571 2.47707827211837 2451816.563364743 0.375188011147719 38.7057500034441 9.38891018726592 79.499276812093 3127137.47980324 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2010-Dec-08 23:15 < 00:01 Jupiter 1.59011691188733 1.59011652799769 1.59011729577678 2.13069251476574 1.86399887364834 2455539.468522249 0.228848371689969 45.4396873737682 15.6097556075713 76.1394749132199 2461259.47134401 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2021-Feb-26 15:49 < 00:01 Jupiter 1.86515508220524 1.86515461715671 1.86515554725366 3.02492570453185 2.87087371818373 2459272.159128114 0.318342024679762 39.4271467321424 15.6574311720978 -82.2400603859176 3145672.85062096 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2083-Aug-01 12:51 00:02 Jupiter 1.74638662193375 1.74638581584403 1.74638742802356 2.44441123456972 2.23721202579664 2482073.035710867 1.76001729241858 63.4087768457572 6.96527462585701 74.6910695084484 2212939.83383109 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2093-Oct-09 01:20 00:02 Jupiter 1.60803935769482 1.60803882973329 1.60803988565736 2.20177628270332 1.94790502657458 2485794.555620696 2.01545210615416 126.517897125725 15.7451084885493 88.9762302031999 2512590.28100284 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2104-Jan-01 04:11 00:02 Jupiter 1.94208329800024 1.94208200520978 1.94208459079103 3.30539079792639 3.1706980228368 2489529.674022883 2.17862217246107 82.789361621192 23.789809159689 -53.9913729257255 2319061.5031287 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2166-Jun-02 12:28 00:04 Jupiter 1.69364678082065 1.69364546745098 1.69364809419282 2.25520299884982 2.02131279669156 2512328.019472391 3.81892641087136 141.291665510521 1.49659997599666 80.4208592253173 2274765.49540336 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53
2176-Aug-10 18:27 00:04 Jupiter 1.63857116084285 1.63857002244709 1.63857229924773 2.31483717117559 2.07957113418301 2516050.268461113 4.03399100985877 232.300137932947 14.0811550095482 -86.7080555395836 2581116.67399252 T 36 CATAB v2.0f-lin.ifort 2020-Aug-24 22:53:10 2020-Aug-24 22:53

Alternate Designations
 1980 CF = 1972 XN2 = 1976 OE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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