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JPL Small-Body Database Browser
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245 Vera
Classification: Main-belt Asteroid          SPK-ID: 2000245
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964653645349323 4.2631e-08  
a 3.096343736458328 1.308e-08 au
q 2.488019435549588 1.3437e-07 au
i 5.178865262054786 4.6955e-06 deg
node 61.0671281298167 4.9383e-05 deg
peri 331.5412507170183 5.0591e-05 deg
M 299.1862768535802 1.262e-05 deg
tp 2458936.679533134515
(2020-Mar-28.17953313)
7.0381e-05 TDB
period 1990.087527399652
5.45
1.2611e-05
3.453e-08
d
yr
n .1808965661276185 1.1463e-09 deg/d
Q 3.704668037367068 1.565e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2427  
   data-arc span      49108 days (134.45 yr)  
   first obs. used      1885-03-09  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46743  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:06:44  

Additional Information
 Earth MOID = 1.49521 au 
 Jupiter MOID = 1.73249 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 7.82   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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-January); 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          Discovered 1885-Feb-06 by Pogson, N. R. at Madras
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A919 HB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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