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23489 (1991 PU16)
Classification: Main-belt Asteroid          SPK-ID: 2023489
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216994551713212 5.5728e-08  
a 2.371455073095958 1.5013e-08 AU
q 2.082850282736914 1.3286e-07 AU
i 3.260112218607214 7.8538e-06 deg
node 21.08070109245275 8.7746e-05 deg
peri 302.9159432527511 9.3462e-05 deg
M 98.25328933024046 3.2145e-05 deg
tp 2456436.446360720716
(2013-May-23.94636072)
0.00011886 JED
period 1333.892341253197
3.65
1.2667e-05
3.468e-08
d
yr
n .2698868483357349 2.5628e-09 deg/d
Q 2.660059863455001 1.684e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      899  
   data-arc span      8209 days (22.48 yr)  
   first obs. used      1991-08-07  
   last obs. used      2014-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51864  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 18:36:03  

Additional Information
 Earth MOID = 1.07185 AU 
 T_jup = 3.532 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6 mag n/a MPO266078  

23489 (1991 PU16)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PU16 = 1995 VB1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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