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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1214803031824586 5.1516e-08  
a 2.372654757344073 1.5177e-08 AU
q 2.084423938074612 1.2331e-07 AU
i 3.259850832625211 7.1541e-06 deg
node 21.04737835540204 8.2425e-05 deg
peri 303.19794570363 8.7649e-05 deg
M 151.9378464227337 2.984e-05 deg
tp 2456437.104056018671
(2013-May-24.60405602)
0.00011051 JED
period 1334.904664035907
3.65
1.2808e-05
3.507e-08
d
yr
n .2696821800828741 2.5876e-09 deg/d
Q 2.660885576613534 1.7021e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      8542 days (23.39 yr)  
   first obs. used      1991-08-07  
   last obs. used      2014-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4948  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:57:22  

Additional Information
 Earth MOID = 1.07531 AU 
 T_jup = 3.531 
[ 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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