+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07568692855123631 3.8172e-08   a 3.136663667704261 1.7628e-08 au q 2.89925922879747 1.1921e-07 au i 4.627750004316519 3.9661e-06 deg node 145.6103982917919 5.0809e-05 deg peri 49.81427177749086 5.7399e-05 deg M 100.4595188036963 2.5271e-05 deg tp 2458634.275118055300 (2019-May-30.77511806) 0.00014347 TDB period 2029.085545376829 5.56 1.7105e-05 4.683e-08 d yr n .1774198238315985 1.4956e-09 deg/d Q 3.374068106611052 1.8962e-08 au   Orbit Determination Parameters    # obs. used (total)      2510      data-arc span      24252 days (66.40 yr)      first obs. used      1954-07-03      last obs. used      2020-11-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42461      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:03:53   Additional Information  Earth MOID = 1.90038 au   Jupiter MOID = 1.58682 au   T_jup = 3.202  [ hide covariance matrix ] Orbital Elements at Epoch 2456377.5 (2013-Mar-26.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07313822156061578 3.8064e-08   q 2.900590864731134 1.1789e-07 au tp 2456596.741951441936 (2013-Oct-31.24195144) 0.00015309 TDB node 145.7306235280639 5.0992e-05 deg peri 47.14439709158171 5.8081e-05 deg i 4.620866195604656 3.9613e-06 deg   Orbit Determination Parameters    # obs. used (total)      2510      data-arc span      24252 days (66.40 yr)      first obs. used      1954-07-03      last obs. used      2020-11-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42461      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:03:53   Additional Information  Jupiter MOID = 1.58682 au   T_jup = 3.202  Orbit Covariance (6×6)   e q tp node peri i e 1.448854114357943E-15 -4.447896043029317E-15 -1.97936491359173E-15 -2.338375472304549E-16 -1.067537959008013E-14 -5.816864148783567E-16 q -4.447896043029317E-15 1.389810716861906E-14 -6.432118786791194E-13 -4.314807613902575E-15 -8.859103958329817E-14 2.836084150163142E-15 tp -1.97936491359173E-15 -6.432118786791194E-13 2.343738194308915E-8 1.71854126399052E-11 4.279963366224665E-9 -2.393679888973307E-12 node -2.338375472304549E-16 -4.314807613902575E-15 1.71854126399052E-11 2.600185972915313E-9 -2.588600955875351E-9 1.897449659472622E-11 peri -1.067537959008013E-14 -8.859103958329817E-14 4.279963366224665E-9 -2.588600955875351E-9 3.373367714169151E-9 -1.92925816651013E-11 i -5.816864148783567E-16 2.836084150163142E-15 -2.393679888973307E-12 1.897449659472622E-11 -1.92925816651013E-11 1.569196821628316E-11 [ 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 11.70   n/a E2021B10   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.DB Last 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 1.87228356255513 1.87228243254949 1.87228469256055 2.94564489013231 2.78783469541563 2421561.595928617 2.28487810215824 54.406725079094 24.0657647243209 50.8897204287018 1672271.78469041 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 1928-Feb-07 13:08 00:02 Jupiter 1.59370772332704 1.59370731276534 1.59370813388938 2.1222644614476 1.85500620802126 2425284.047152724 2.0623635060242 129.050100034649 16.491406631969 84.7640244027619 2494961.11902172 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 1938-Apr-25 16:51 00:02 Jupiter 1.80448460158556 1.80448377635261 1.80448542681902 2.8041758118726 2.63146438642581 2429014.201882423 1.75801738990988 79.5092416829617 16.0311787484543 -72.1382998769016 2757464.54950118 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2000-Sep-29 01:31 < 00:01 Jupiter 1.80123037693286 1.80122995295478 1.80123080091085 2.66015225125476 2.477078266531 2451816.563371424 0.374284425469882 38.6465082559226 9.38079421611911 79.5033550996516 3136875.2610406 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2010-Dec-08 23:15 < 00:01 Jupiter 1.59011690582408 1.59011652343199 1.59011728821608 2.13069249848178 1.86399885394485 2455539.468524123 0.22810482560209 45.2021131220926 15.4820296782535 76.3119612792494 2476252.447608 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2021-Feb-26 15:49 < 00:01 Jupiter 1.86515509066063 1.86515462732096 1.8651555540003 3.02492573418192 2.87087375014194 2459272.159120037 0.312869872170283 38.9836762954289 15.594073448921 -82.2559508695728 3149038.05390257 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2083-Aug-01 12:51 00:02 Jupiter 1.74638659848635 1.74638580418959 1.74638739278321 2.44441106122776 2.23721183348989 2482073.035666318 1.74203566292419 63.0571896242993 6.9113664850532 74.7736875086877 2238274.46984025 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2093-Oct-09 01:20 00:02 Jupiter 1.60803935983182 1.60803883206004 1.60803988760469 2.20177629363877 1.94790503929461 2485794.555590984 1.99416153083411 125.15730018535 15.5747051404122 88.9703167770364 2525913.60228861 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2104-Jan-01 04:11 00:02 Jupiter 1.94208333058106 1.94208205077608 1.94208461038636 3.30539091979583 3.17069815219095 2489529.673983266 2.15507558384927 81.8718096354499 23.5946961824154 -53.9749184628944 2331753.66210517 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2166-Jun-02 12:28 00:04 Jupiter 1.6936467476403 1.69364545213338 1.69364804314963 2.2552029123914 2.0213126953816 2512328.019423819 3.78187663686272 140.126575371224 1.49021582463992 80.413785085376 2293855.81518973 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 2176-Aug-10 18:27 00:04 Jupiter 1.63857117719398 1.63857004488421 1.63857230951261 2.31483724290922 2.0795712165125 2516050.268403915 3.99413837119006 229.934017952615 13.9337330779435 -86.7022323965274 2590800.98369088 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 01:03:59 2021-Feb-24 01:03 Alternate Designations  1980 CF = 1972 XN2 = 1976 OE  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 21:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin