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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07568689077872504 2.1325e-08  
a 3.136663629453359 1.5383e-08 au
q 2.899259311921324 6.4755e-08 au
i 4.627750015164246 4.0096e-07 deg
node 145.6103645612404 1.7724e-06 deg
peri 49.81431638527273 9.8741e-06 deg
M 100.4595217257603 1.1751e-05 deg
tp 2458634.275111943005
(2019-May-30.77511194)		 6.4489e-05 TDB
period 2029.085508260473
5.56		 1.4927e-05
4.087e-08		 d
yr
n .1774198270769903 1.3052e-09 deg/d
Q 3.374067946985395 1.6547e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2564  
   data-arc span      24252 days (66.40 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-11-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:55:14  

Additional Information
 Earth MOID = 1.90038 au 
 Jupiter MOID = 1.58682 au 
 T_jup = 3.202 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456542.5 (2013-Sep-07.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07321766218237273 2.1448e-08  
q 2.900453184318538 6.4863e-08 au
tp 2456597.055384552032
(2013-Oct-31.55538455)		 6.2489e-05 TDB
node 145.7302421557023 1.7768e-06 deg
peri 47.21142594978902 1.0239e-05 deg
i 4.620824130166208 4.003e-07 deg
   Orbit Determination Parameters
   # obs. used (total)      2564  
   data-arc span      24252 days (66.40 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-11-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:55:14  

Additional Information
 Jupiter MOID = 1.58682 au 
 T_jup = 3.202 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.600074098553198E-16 -1.359884174755502E-15 2.350985638272961E-13 3.371643654852839E-15 -1.630562865757613E-15 -7.423034811586181E-16
q -1.359884174755502E-15 4.207202811952598E-15 -5.474882963324425E-13 -1.054388272041006E-14 3.948747021705123E-14 2.157369274113589E-15
tp 2.350985638272961E-13 -5.474882963324425E-13 3.904841172754608E-9 2.995794048487336E-11 6.196540303764604E-10 -7.828107831096692E-12
node 3.371643654852839E-15 -1.054388272041006E-14 2.995794048487336E-11 3.15696839816459E-12 2.004527821069634E-12 -3.293880323825303E-13
peri -1.630562865757613E-15 3.948747021705123E-14 6.196540303764604E-10 2.004527821069634E-12 1.04847069547782E-10 -9.198268962232805E-13
i -7.423034811586181E-16 2.157369274113589E-15 -7.828107831096692E-12 -3.293880323825303E-13 -9.198268962232805E-13 1.602422285337134E-13

[ 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 1.87228376562242 1.87228265564601 1.87228487559861 2.94564562988645 2.78783549554176 2421561.596179833 2.18495255282568 45.5978804772311 3.77203415811324 33.3673533963702 5956974.45049643 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
1928-Feb-07 13:08 00:02 Jupiter 1.59370790957862 1.59370762823648 1.59370819092212 2.12226511232411 1.85500698773851 2425284.047359205 1.98430267116241 119.335129965034 2.785781141517 86.0854499286168 5124272.38225124 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
1938-Apr-25 16:51 00:02 Jupiter 1.80448459418205 1.80448380826496 1.80448538009966 2.80417637123067 2.63146498274989 2429014.202052982 1.69823180615251 68.6841146736201 4.73359529351283 -66.5591865239201 7014794.83901328 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2000-Sep-29 01:31 < 00:01 Jupiter 1.8012303813286 1.80123011746706 1.80123064519003 2.66015220149898 2.47707821460993 2451816.563318155 0.364626274197807 9.97361237181717 3.91174746251682 48.2505488035008 5883654.49452275 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2010-Dec-08 23:15 < 00:01 Jupiter 1.59011707353892 1.59011684933202 1.59011729774572 2.13069325737354 1.86399975313585 2455539.468428718 0.136099194422264 8.94103498900057 2.45216590169614 79.9446553871862 4911229.43999564 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2021-Feb-26 15:49 < 00:01 Jupiter 1.86515532700594 1.8651551458566 1.86515550815527 3.02492692394921 2.87087502467096 2459272.158967578 0.155362101514036 6.54030694377267 4.0088982837543 -24.9658910507775 8091894.96957378 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2083-Aug-01 12:51 00:02 Jupiter 1.74638637609368 1.74638583429271 1.74638691789484 2.44441034848411 2.23721102832561 2482073.035166254 1.54538033683148 43.8430835808638 1.79483740418297 73.0004378739487 6169280.4731719 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2093-Oct-09 01:19 00:02 Jupiter 1.60803963342771 1.60803924306682 1.60804002379005 2.20177763106723 1.94790659853342 2485794.555121694 1.77658067352116 103.461241845653 1.35447612177349 -89.9411976009289 5270041.78956705 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2104-Jan-01 04:10 00:02 Jupiter 1.94208373512601 1.94208271255594 1.94208475769641 3.30539282323547 3.17070016590249 2489529.673598738 1.933411260929 66.2405506166054 4.67167316129644 -51.0075415971097 9126445.11059424 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2166-Jun-02 12:28 00:03 Jupiter 1.69364669100793 1.69364563164673 1.69364775037143 2.25520272879509 2.02131248363449 2512328.019146681 3.44880720883972 121.761534868723 0.724892180545364 80.573106098444 5443429.67371121 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56
2176-Aug-10 18:26 00:04 Jupiter 1.63857155512602 1.63857058173218 1.63857252852796 2.31483892895832 2.07957315201361 2516050.268086903 3.64446624583849 205.108391225487 1.37562638025652 -86.4742564951503 5577593.32593859 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:56:54 2021-Apr-12 13:56

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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