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12725 (1991 PP16)
Classification: Main-belt Asteroid          SPK-ID: 2012725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551982579327101 2.9897e-08  
a 2.392945609334471 6.7775e-09 au
q 2.021564619438033 7.3663e-08 au
i 5.396495763838185 3.0024e-06 deg
node 151.5323960645358 3.4173e-05 deg
peri 190.606969197093 3.5516e-05 deg
M 278.104669399058 1.0231e-05 deg
tp 2459308.077319387122
(2021-Apr-03.57731939)
3.8708e-05 TDB
period 1352.065302952574
3.70
5.7442e-06
1.573e-08
d
yr
n .2662593287571611 1.1312e-09 deg/d
Q 2.764326599230908 7.8294e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      11034 days (30.21 yr)  
   first obs. used      1990-04-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46199  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:30:36  

Additional Information
 Earth MOID = 1.01352 au 
 Jupiter MOID = 2.62532 au 
 T_jup = 3.508 
[ 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 13.8   n/a MPO365402  
diameter diameter 5.041 km 1.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.252   0.245 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

12725 (1991 PP16)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PP16 = 1995 UU8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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