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9958 (1991 VL1)
Classification: Main-belt Asteroid          SPK-ID: 2009958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1261834263664257 8.0637e-09  
a 2.175577298721674 5.3862e-09 au
q 1.90105550084396 1.8971e-08 au
i 5.966500693836419 7.1522e-07 deg
node 102.5677648700151 4.9873e-06 deg
peri 256.7318904634002 1.1208e-05 deg
M 118.4709097003783 1.0414e-05 deg
tp 2459010.782425531671
(2020-Jun-10.28242553)
3.398e-05 TDB
period 1172.087959481205
3.21
4.3527e-06
1.192e-08
d
yr
n .3071441840929284 1.1406e-09 deg/d
Q 2.450099096599387 6.0658e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2363  
   data-arc span      10750 days (29.43 yr)  
   first obs. used      1991-11-04  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46993  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 12:51:21  

Additional Information
 Earth MOID = .906807 au 
 Jupiter MOID = 2.97641 au 
 T_jup = 3.668 
[ 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 14.38   n/a MPCxxxxx  
diameter diameter 3.819 km 0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9958 (1991 VL1)          Discovered 1991-Nov-04 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 VL1 = 1996 FN5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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