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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0747221870993916 3.8063e-08  
a 3.133558898698932 1.6699e-08 au
q 2.899412524383386 1.1813e-07 au
i 4.622023518403537 3.962e-06 deg
node 145.6638268521079 5.0958e-05 deg
peri 49.06415948681937 5.7765e-05 deg
M 65.754231983049 2.5846e-05 deg
tp 2458630.436349292167
(2019-May-26.93634929)
0.00014605 TDB
period 2026.073611340543
5.55
1.6196e-05
4.434e-08
d
yr
n .1776835737778586 1.4204e-09 deg/d
Q 3.367705273014476 1.7947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2505  
   data-arc span      24237 days (66.36 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42496  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:07:01  

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. 2020-October); 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 1.87228355888807 1.87228242873163 1.87228468904418 2.9456449414636 2.78783474933478 2421561.595929865 2.28548949059133 54.4162121487776 24.0661781560228 50.8881556120974 1672225.73068339 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
1928-Feb-07 13:08 00:02 Jupiter 1.5937077239452 1.59370731336348 1.59370813452756 2.1222644644491 1.85500621156633 2425284.047155627 2.06287067436048 129.078506084599 16.4958883306891 84.7625121813716 2494409.27632357 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
1938-Apr-25 16:51 00:02 Jupiter 1.80448460434954 1.80448377897391 1.80448542972578 2.80417581583925 2.63146439092604 2429014.201878505 1.75841419816072 79.5271717908667 16.0337086259091 -72.1393946882887 2757241.26963304 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2000-Sep-29 01:31 < 00:01 Jupiter 1.80123037788356 1.80122995386585 1.80123080190127 2.66015226307065 2.47707827932037 2451816.563371667 0.374305006522888 38.6470697408735 9.38141228522208 79.5036726482384 3136367.28738118 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2010-Dec-08 23:15 < 00:01 Jupiter 1.59011690676711 1.59011652433886 1.59011728919517 2.13069251802353 1.86399887645204 2455539.468515345 0.228141549160389 45.2122002583101 15.4852147859091 76.3074160055374 2475881.35291093 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2021-Feb-26 15:49 < 00:01 Jupiter 1.86515508903033 1.86515462559439 1.86515555246627 3.02492571995435 2.87087373501265 2459272.159122779 0.313071083502069 38.9979306168866 15.597358304432 -82.2530217927091 3148754.94894524 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2083-Aug-01 12:51 00:02 Jupiter 1.74638660222793 1.74638580749745 1.7463873969585 2.44441110874961 2.23721188587745 2482073.035675923 1.74265495108199 63.069025961451 6.91369232800653 74.7705384389503 2237293.21637403 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2093-Oct-09 01:20 00:02 Jupiter 1.60803935975026 1.60803883196395 1.60803988753766 2.20177630922328 1.94790505689655 2485794.555589695 1.99488877099266 125.204622608167 15.5793408271547 88.970502652596 2525614.47735453 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2104-Jan-01 04:11 00:02 Jupiter 1.94208332650088 1.94208204620575 1.94208460679633 3.30539089384859 3.17069812485247 2489529.673989200 2.1558702000043 81.9031347524646 23.6012230545613 -53.9737417316441 2331219.5071974 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2166-Jun-02 12:28 00:04 Jupiter 1.69364675064035 1.69364545451208 1.69364804677113 2.25520288055925 2.02131266030436 2512328.019415699 3.78312825539316 140.166306469334 1.4903447730107 80.4139578963211 2293131.98501325 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07
2176-Aug-10 18:26 00:04 Jupiter 1.6385711769116 1.63857004436618 1.63857230946588 2.31483727325241 2.07957125024565 2516050.268398671 3.99548045609086 230.014164695955 13.9378563248142 -86.7023610346111 2590617.35116233 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:07:07 2020-Dec-18 02:07

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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