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240 Vanadis (A884 QB)
Classification: Main-belt Asteroid          SPK-ID: 2000240
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078088372130517 3.6387e-08  
a 2.66431120898989 6.6529e-09 au
q 2.110643794676001 9.8619e-08 au
i 2.105548607388857 3.6131e-06 deg
node 115.0679673238629 0.00010138 deg
peri 300.9969463414956 0.00010173 deg
M 16.70553426356987 9.0472e-06 deg
tp 2458926.788758933437
(2020-Mar-18.28875893)
3.9774e-05 TDB
period 1588.458433312761
4.35
5.9497e-06
1.629e-08
d
yr
n .2266348255957904 8.4888e-10 deg/d
Q 3.217978623303779 8.0355e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2992  
   data-arc span      49466 days (135.43 yr)  
   first obs. used      1884-08-29  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:21:36  

Additional Information
 Earth MOID = 1.12343 au 
 Jupiter MOID = 2.1412 au 
 T_jup = 3.352 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.1   n/a MPO502155 IRAS observations used: 9
diameter diameter 87.928 km 1.616 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.64 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Denchev, P. (1999) Abstracts of ACM 1999, 117.]
[Denchev, P. (2000) Planet. Space Sci. 48, 987-992.]
[Alton, K.B. (2016) Minor Planet Bull. 43, 217-218.]
geometric albedo albedo 0.031   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.705   0.011 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.73, mean=8.50, max.=15.96) deg.
U-B UB 0.368   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.73, mean=8.50, max.=15.96) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B C   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)

240 Vanadis (A884 QB)          Discovered 1884-Aug-27 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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