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26844 (1991 VA4)
Classification: Main-belt Asteroid          SPK-ID: 2026844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .202976605338073 3.323e-08  
a 2.331214246730274 6.8612e-09 au
q 1.85803229261321 7.8757e-08 au
i 3.133791299935049 3.6594e-06 deg
node 104.9133494754233 6.7838e-05 deg
peri 342.5718345947911 6.8465e-05 deg
M 344.3109005433816 9.91e-06 deg
tp 2459057.158780799303
(2020-Jul-26.65878080)
3.5902e-05 TDB
period 1300.084886589507
3.56
5.7396e-06
1.571e-08
d
yr
n .2769049957533024 1.2225e-09 deg/d
Q 2.804396200847338 8.2539e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1383  
   data-arc span      10283 days (28.15 yr)  
   first obs. used      1991-11-09  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 02:40:50  

Additional Information
 Earth MOID = .874712 au 
 Jupiter MOID = 2.40851 au 
 T_jup = 3.541 
[ 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 14.7   n/a MPO439287  
diameter diameter 2.957 km 0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.320   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26844 (1991 VA4)          Discovered 1991-Nov-12 by Otomo, S. at Kiyosato
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 VA4 = 1998 SA67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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