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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07728461676727699 2.1355e-08  
a 3.134487746102486 1.6146e-08 au
q 2.892240061883229 6.4833e-08 au
i 4.634594985591869 4.0114e-07 deg
node 145.6000423577307 1.7695e-06 deg
peri 49.83691592984982 9.6918e-06 deg
M 135.0796304222031 1.1736e-05 deg
tp 2458635.936193689167
(2019-Jun-01.43619369)
6.3443e-05 TDB
period 2026.974529143328
5.55
1.5662e-05
4.288e-08
d
yr
n .1776045997737075 1.3723e-09 deg/d
Q 3.376735430321742 1.7394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2627  
   data-arc span      24476 days (67.01 yr)  
   first obs. used      1954-07-03  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42718  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:24:54  

Additional Information
 Earth MOID = 1.89483 au 
 Jupiter MOID = 1.58328 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 11.70   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.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 1.87228376552372 1.87228265981024 1.87228487123698 2.94564559214808 2.78783545565859 2421561.596174549 2.17621675255048 45.4237474432072 3.77201653252779 33.3682267901166 5957900.88287868 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
1928-Feb-07 13:08 00:02 Jupiter 1.59370790926314 1.59370762894071 1.59370818958685 2.12226511698228 1.85500699301108 2425284.047342010 1.97632548019253 118.860441804397 2.78439301891099 86.0816809649101 5127180.31211165 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
1938-Apr-25 16:51 00:02 Jupiter 1.80448459432313 1.80448381086492 1.80448537778196 2.80417630871783 2.63146491614808 2429014.202062684 1.69135045792559 68.4026161388605 4.72876753095274 -66.5429618734457 7021071.73647161 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2000-Sep-29 01:31 < 00:01 Jupiter 1.80123038066519 1.80123011748617 1.80123064384421 2.66015220341577 2.47707821659846 2451816.563318292 0.363651218384996 9.95574281303786 3.90863824077634 48.3137484154425 5893768.66372344 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2010-Dec-08 23:15 < 00:01 Jupiter 1.59011707294074 1.59011684917765 1.59011729670374 2.13069325608125 1.86399975155116 2455539.468427952 0.135998606446755 8.93216229391768 2.45115940437508 79.923049040141 4919759.23128792 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2021-Feb-26 15:49 < 00:01 Jupiter 1.86515532635639 1.8651551458997 1.86515550681309 3.02492696178687 2.87087506448392 2459272.158962103 0.154568668798161 6.50668018944367 4.00818326165284 -24.8585185436264 8111479.40365 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2083-Aug-01 12:51 00:02 Jupiter 1.74638637924967 1.74638583966829 1.74638691883124 2.44441044892254 2.23721113845793 2482073.035188687 1.53845650413356 43.6399920695168 1.79476957865687 73.0024050061284 6169311.9597676 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2093-Oct-09 01:19 00:02 Jupiter 1.60803963134347 1.60803924284326 1.60804001984524 2.20177762778098 1.94790659446837 2485794.555126972 1.7687583512069 103.007179274539 1.35426149504303 -89.9399574654336 5273126.57588447 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2104-Jan-01 04:10 00:02 Jupiter 1.94208372895801 1.94208271121274 1.94208474670361 3.30539283297404 3.17070017561789 2489529.673602526 1.92505316440746 65.9501375121178 4.66840363209372 -51.0217632811571 9136069.70809223 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2166-Jun-02 12:28 00:03 Jupiter 1.69364669737932 1.69364564229908 1.69364775246187 2.25520273795487 2.02131249478495 2512328.019158853 3.43385106994688 121.222167194421 0.724381635952893 80.5743100405157 5444116.99755328 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26
2176-Aug-10 18:26 00:04 Jupiter 1.63857154926586 1.63857058059991 1.63857251793991 2.31483892965213 2.07957315189692 2516050.268096230 3.62877362721397 204.228662778444 1.37486732903096 -86.4754366101858 5581598.77613049 T 43 CATAB v2.0g-lin.ifort 2021-Jul-09 13:26:45 2021-Jul-09 13:26

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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