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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1966744399433779 3.9905e-08  
a 3.096638089972966 1.1774e-08 au
q 2.487608527920202 1.2591e-07 au
i 5.178680111571444 4.4908e-06 deg
node 61.06693599982661 4.7581e-05 deg
peri 331.5930326250052 4.8745e-05 deg
M 11.51387619798831 1.1347e-05 deg
tp 2458936.841975244575
(2020-Mar-28.34197524)
6.2683e-05 TDB
period 1990.371315261932
5.45
1.1352e-05
3.108e-08
d
yr
n .1808707738297686 1.0315e-09 deg/d
Q 3.705667652025731 1.409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2775  
   data-arc span      49540 days (135.63 yr)  
   first obs. used      1885-03-09  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:46  

Additional Information
 Earth MOID = 1.49546 au 
 Jupiter MOID = 1.73363 au 
 T_jup = 3.187 
[ 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 7.8   n/a MPO502155 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. 2019-August); 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

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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 1.7375824725465 1.73758211112008 1.73758283397361 1.74911280073794 1.44376311087896 2432175.694986330 1.10895015692173 135.164918064278 48.9861626391033 79.3674208069808 2100915.59063095 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
1956-Nov-08 01:07 < 00:01 Jupiter 1.96347793807895 1.96347737080261 1.96347850535529 2.25428348361346 2.05402441511927 2435785.546355074 0.918719719651185 75.7862549386339 9.53411712021381 -87.9318509419385 2702719.60008101 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
2007-May-03 19:09 < 00:01 Jupiter 1.84063930932041 1.84063891128684 1.84063970735409 2.18831843606678 1.96681994820719 2454224.298221636 0.239666972524186 69.1228139538431 8.99696165423344 79.3697795461167 2619008.8684805 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
2017-Mar-24 03:21 < 00:01 Jupiter 1.78687377964553 1.78687337692788 1.786874182364 1.73900129721247 1.44085942352695 2457836.639776874 0.256092557266788 138.620567112038 49.1494922385688 87.8551018669509 2164651.69031789 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
2077-Aug-02 02:45 00:01 Jupiter 1.7307337313777 1.73073334980813 1.73073411294817 1.75135390303025 1.44514319147624 2479882.614667116 1.16430258524934 135.979933886108 53.6290490402794 81.4573687498126 1958721.66565304 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
2087-Jun-21 22:00 00:01 Jupiter 1.9664842283834 1.96648352309042 1.96648493367716 2.28398320624233 2.08689255673195 2483493.416406887 1.37633799379439 102.757280617496 12.4117678373053 87.0862045736761 2808733.20480417 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
2137-Dec-14 19:26 00:02 Jupiter 1.83169588445927 1.83169505274189 1.83169671617779 2.15079558295967 1.92381679040175 2501931.309504452 2.20802090260194 114.805041949333 14.9351032674285 86.8881123420005 1844983.96301334 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31
2147-Nov-04 09:03 00:02 Jupiter 1.78343237325574 1.78343167779417 1.78343306872583 1.77082537210875 1.47849364487661 2505542.877025034 2.38463973481739 254.952434789963 45.2612120941753 87.639363464203 2141916.00629963 T 115 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:54 2020-Nov-13 04:31

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