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3449 Abell (1978 VR9)
Classification: Main-belt Asteroid          SPK-ID: 2003449
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1504997343585765 3.4679e-08  
a 3.089850132671634 1.7306e-08 au
q 2.624828508496741 1.1063e-07 au
i 2.038384125359721 3.851e-06 deg
node 81.39536925153469 0.00011791 deg
peri 334.4701258471567 0.00011888 deg
M 258.0734733617513 1.7482e-05 deg
tp 2459562.180406094484
(2021-Dec-13.68040609)
9.8803e-05 TDB
period 1983.830440054801
5.43
1.6667e-05
4.563e-08
d
yr
n .1814671217516228 1.5246e-09 deg/d
Q 3.554871756846527 1.991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1947  
   data-arc span      15250 days (41.75 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50618  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:03:48  

Additional Information
 Earth MOID = 1.63682 au 
 Jupiter MOID = 1.7933 au 
 T_jup = 3.207 
[ 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 12.8   n/a MPO267721  
diameter diameter 15.796 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3449 Abell (1978 VR9)          Discovered 1978-Nov-07 by Helin, E. F. and Bus, S. J. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 VR9 = 1983 TQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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