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21048 (1990 SV9)
Classification: Main-belt Asteroid          SPK-ID: 2021048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103925122801581 4.4839e-08  
a 2.135002042255387 6.5356e-09 au
q 1.899313803087547 9.6167e-08 au
i 3.480744227995473 4.1459e-06 deg
node 141.9324142304572 5.694e-05 deg
peri 196.2405043462476 5.86e-05 deg
M 264.4966026108369 1.3733e-05 deg
tp 2459502.781932151989
(2021-Oct-15.28193215)
4.3617e-05 TDB
period 1139.451564547843
3.12
5.2321e-06
1.432e-08
d
yr
n .3159414679840782 1.4507e-09 deg/d
Q 2.370690281423228 7.2571e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1378  
   data-arc span      10854 days (29.72 yr)  
   first obs. used      1990-09-22  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50998  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:13:16  

Additional Information
 Earth MOID = .888292 au 
 Jupiter MOID = 2.93708 au 
 T_jup = 3.708 
[ 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 15.84   n/a E2021B10  
diameter diameter 1.843 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.172   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21048 (1990 SV9)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 SV9 = 1992 DU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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