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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07472218503482819 3.9221e-08  
a 3.133558899588709 1.7149e-08 au
q 2.899412531676109 1.2272e-07 au
i 4.622023422120348 4.0467e-06 deg
node 145.6638249357118 5.2007e-05 deg
peri 49.06416071048695 5.8725e-05 deg
M 65.75423233086083 2.5862e-05 deg
tp 2458630.436347177068
(2019-May-26.93634718)
0.00014616 TDB
period 2026.073612203502
5.55
1.6632e-05
4.554e-08
d
yr
n .1776835737021785 1.4586e-09 deg/d
Q 3.367705267501309 1.843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2383  
   data-arc span      24091 days (65.96 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43419  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:46:29  

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 1.87228354460158 1.87228239121555 1.87228469798741 2.94564488458487 2.78783468799807 2421561.595902057 2.35956931256728 55.8319498065233 24.2906533252071 50.7863828892053 1657766.28947471 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
1928-Feb-07 13:08 00:02 Jupiter 1.59370772812516 1.59370731477504 1.59370814147582 2.12226447840532 1.85500622828474 2425284.047128901 2.12490561737829 132.481469932967 17.0621424073702 84.6254474060249 2425631.64876746 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
1938-Apr-25 16:51 00:02 Jupiter 1.80448461558174 1.804483766447 1.80448546471709 2.80417580557257 2.63146438109586 2429014.201867985 1.80701761448519 81.566016058025 16.4320825036739 -72.1200691718106 2719443.45833606 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2000-Sep-29 01:31 < 00:01 Jupiter 1.80123038017469 1.80122995392256 1.80123080642672 2.66015229014352 2.47707830863559 2451816.563370059 0.378203754597775 39.0182289901691 9.39840592988556 79.4812091924596 3106931.44686554 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2010-Dec-08 23:15 < 00:01 Jupiter 1.5901169118106 1.59011652338007 1.59011730024104 2.13069251863555 1.86399887805803 2455539.468520205 0.230585031868223 45.8270611074598 15.9901913888833 75.7855294599501 2417761.73003378 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2021-Feb-26 15:49 < 00:01 Jupiter 1.86515508236335 1.86515461359335 1.86515555113334 3.0249257028457 2.87087371642051 2459272.159128471 0.333026884262162 40.4296099546952 15.8011232449241 -82.2065232165017 3140022.70951963 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2083-Aug-01 12:51 00:02 Jupiter 1.74638662190161 1.74638578407608 1.74638745972715 2.44441117433126 2.23721195997521 2482073.035700341 1.81110555757932 64.4817291290329 7.09584830021612 74.484538233026 2150617.43938012 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2093-Oct-09 01:20 00:02 Jupiter 1.60803935739472 1.60803882904352 1.60803988574702 2.20177625127688 1.94790499100185 2485794.555632697 2.07602879675581 130.290184380103 16.1824693253587 89.0177458671964 2472662.7402571 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2104-Jan-01 04:11 00:02 Jupiter 1.94208329691574 1.9420819687959 1.9420846250359 3.30539081271583 3.1706980381777 2489529.674022024 2.24585660726188 85.3080201195224 24.2247914798214 -54.0119959689677 2294877.13073158 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2166-Jun-02 12:28 00:04 Jupiter 1.69364678443029 1.69364542144034 1.69364814742285 2.255203014334 2.02131281449478 2512328.019481448 3.92515916750888 144.652162106142 1.51640827598468 80.4420840692815 2229536.33118568 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46
2176-Aug-10 18:27 00:04 Jupiter 1.63857115731362 1.63857000209708 1.63857231253985 2.31483717515465 2.07957113807684 2516050.268466387 4.14828782868389 239.03109939973 14.4440545870775 -86.7195357096276 2549726.26043273 T 35 CATAB v2.0f-lin.ifort 2020-Jun-23 15:46:43 2020-Jun-23 15:46

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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