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19967 (1987 SN12)
Classification: Main-belt Asteroid          SPK-ID: 2019967
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2158646091031846 4.5459e-08  
a 2.564687814225662 1.7641e-08 au
q 2.011062481736138 1.1737e-07 au
i 1.549137119779351 5.0155e-06 deg
node 144.8442001648226 0.00022758 deg
peri 183.8765520744851 0.00022865 deg
M 334.1312624975313 2.0442e-05 deg
tp 2457508.301033004940
(2016-Apr-29.80103301)
8.5488e-05 JED
period 1500.203551799726
4.11
1.5479e-05
4.238e-08
d
yr
n .239967436131 2.476e-09 deg/d
Q 3.118313146715185 2.145e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      13055 days (35.74 yr)  
   first obs. used      1979-11-16  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53349  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:53:55  

Additional Information
 Earth MOID = .997849 au 
 Jupiter MOID = 2.22622 au 
 T_jup = 3.399 
[ 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 14.0 mag n/a MPO259486  

19967 (1987 SN12)          Discovered 1987-Sep-16 by Debehogne, H. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1987 SN12 = 1979 WP1 = 1991 PH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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