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245 Vera (A885 CA)
Classification: Main-belt Asteroid          SPK-ID: 2000245
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 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968861521665233 3.7965e-08  
a 3.097501430495932 1.1168e-08 au
q 2.487646292515286 1.1904e-07 au
i 5.178169950327772 4.3916e-06 deg
node 61.0653526320379 4.6295e-05 deg
peri 331.6203716516098 4.7481e-05 deg
M 47.6485260162056 1.1085e-05 deg
tp 2458936.950212718016
(2020-Mar-28.45021272)
6.1179e-05 TDB
period 1991.203744460961
5.45
1.0769e-05
2.948e-08
d
yr
n .1807951602147352 9.7776e-10 deg/d
Q 3.707356568476578 1.3367e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2875  
   data-arc span      49626 days (135.87 yr)  
   first obs. used      1885-03-09  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4452  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:44:46  

Additional Information
 Earth MOID = 1.49438 au 
 Jupiter MOID = 1.73302 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455964.5 (2012-Feb-07.0) TDB
Reference: JPL 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1940854906265073 3.7361e-08  
q 2.499249965339436 1.1627e-07 au
tp 2456926.005211397266
(2014-Sep-25.50521140)
6.2849e-05 TDB
node 61.41532868719375 4.6705e-05 deg
peri 328.7761933201371 4.7933e-05 deg
i 5.159787972680486 4.3636e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2875  
   data-arc span      49626 days (135.87 yr)  
   first obs. used      1885-03-09  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4452  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:44:46  

Additional Information
 Jupiter MOID = 1.73302 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.395826008810053E-15 -4.331830787019765E-15 -4.113636530150947E-14 2.235533501998522E-15 -2.144064694611153E-14 2.878910559049594E-16
q -4.331830787019765E-15 1.351930785993886E-14 1.764439198236315E-13 -9.277845329323914E-15 6.769012577830717E-14 -4.754809742720429E-16
tp -4.113636530150947E-14 1.764439198236315E-13 3.950009474080681E-9 8.010650404342749E-12 6.959239475661252E-10 9.399927572899218E-13
node 2.235533501998522E-15 -9.277845329323914E-15 8.010650404342749E-12 2.181355114858256E-9 -2.171499255356598E-9 -4.752449783135792E-12
peri -2.144064694611153E-14 6.769012577830717E-14 6.959239475661252E-10 -2.171499255356598E-9 2.297543684422942E-9 4.806489834930165E-12
i 2.878910559049594E-16 -4.754809742720429E-16 9.399927572899218E-13 -4.752449783135792E-12 4.806489834930165E-12 1.904124232234941E-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 7.85   n/a E2021B10 IRAS observations used: 5
diameter diameter 75.949 km 2.626 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.38 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Debehogne, H.; Lagerkvist, C.-I.; Zappala, V. (1982) Astron. Astrophys. Suppl. Ser. 50, 277-281.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.228   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.841   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=5.56, mean=8.29, max.=16.51) deg.
U-B UB 0.476   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=5.56, mean=7.87, max.=16.51) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

245 Vera (A885 CA)          Discovered 1885-Feb-06 by Pogson, N. R. at Madras
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
1946-Dec-21 04:41 00:01 Jupiter 1.73758246031365 1.73758210498826 1.73758281563973 1.74911307440745 1.44376344005135 2432175.695013212 1.04594494348295 132.613017023242 47.5870644320878 79.6600818924213 2150966.0281546 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
1956-Nov-08 01:07 < 00:01 Jupiter 1.96347792974922 1.96347739087548 1.96347846862295 2.25428338866044 2.05402431001774 2435785.546390464 0.873339279112634 72.9359532635441 9.51257756921455 -87.8055919859897 2816854.42751038 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
2007-May-03 19:09 < 00:01 Jupiter 1.84063931562754 1.84063891851721 1.84063971273788 2.18831854478881 1.96682006997496 2454224.298223568 0.238808281272356 68.9332397240667 8.56846741786792 79.2135691337941 2642229.69516413 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
2017-Mar-24 03:21 < 00:01 Jupiter 1.78687376720858 1.7868733733477 1.78687416107016 1.73900152815559 1.44085969996689 2457836.639776248 0.247579477896834 135.586269385854 46.8895881467052 88.208526958938 2258414.95872879 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
2077-Aug-02 02:45 00:01 Jupiter 1.7307337156524 1.73073335032708 1.73073408097852 1.75135413758368 1.44514347265212 2479882.614639097 1.08639255202861 132.454589940214 50.7322159293328 80.592995609673 2049814.34599799 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
2087-Jun-21 22:00 00:01 Jupiter 1.96648425281993 1.96648356248869 1.96648494315183 2.28398337535145 2.0868927443769 2483493.416367401 1.27870137764132 98.0716446393774 12.2448342363437 87.4412069623127 2851159.0959034 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
2137-Dec-14 19:26 00:02 Jupiter 1.83169586658288 1.83169508264757 1.83169665051923 2.1507955819765 1.92381678695671 2501931.309451985 2.06441795374498 109.071308334573 14.4798658962816 86.2815483457076 1879189.0551658 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44
2147-Nov-04 09:03 00:02 Jupiter 1.78343238123542 1.78343169693173 1.78343306554701 1.77082566731544 1.47849399988964 2505542.876957282 2.22532423836497 247.308598571325 43.5081763718355 88.1485162099864 2208494.80891764 T 118 CATAB v2.0f-lin.ifort 2021-Feb-24 00:44:54 2021-Feb-24 00:44

Alternate Designations
 A885 CA = A919 HB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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