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120440 (1978 VU9)
Classification: Main-belt Asteroid          SPK-ID: 2120440
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605830566591259 4.0705e-08  
a 2.450785238997032 1.3198e-08 au
q 2.057230654103822 1.0139e-07 au
i 3.90169391023824 5.077e-06 deg
node 53.80953201309174 9.1329e-05 deg
peri 13.87145644391239 9.4023e-05 deg
M 294.1546337971622 2.4917e-05 deg
tp 2459256.817953760607
(2021-Feb-11.31795376)
9.8106e-05 TDB
period 1401.381276695547
3.84
1.132e-05
3.099e-08
d
yr
n .2568894033241824 2.0751e-09 deg/d
Q 2.844339823890242 1.5317e-08 au
  Orbit Determination Parameters
   # obs. used (total)      469  
   data-arc span      15242 days (41.73 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57668  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:09:30  

Additional Information
 Earth MOID = 1.07139 au 
 Jupiter MOID = 2.44726 au 
 T_jup = 3.475 
[ 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 16.1   n/a MPO436581  
diameter diameter 3.924 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120440 (1978 VU9)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1978 VU9 = 2001 VB28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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