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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2156800319993959 4.5471e-08  
a 2.564436196467552 1.7771e-08 AU
q 2.011338515553021 1.1731e-07 AU
i 1.549058257074757 5.0181e-06 deg
node 144.8434232926664 0.00022761 deg
peri 183.8988745425185 0.00022868 deg
M 238.0951688546902 2.0222e-05 deg
tp 2457508.430966360931
(2016-Apr-29.93096636)
8.5571e-05 JED
period 1499.982783061099
4.11
1.5592e-05
4.269e-08
d
yr
n .2400027547418429 2.4948e-09 deg/d
Q 3.117533877382083 2.1604e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1066  
   data-arc span      12974 days (35.52 yr)  
   first obs. used      1979-11-16  
   last obs. used      2015-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53893  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:26:09  

Additional Information
 Earth MOID = 1.00081 AU 
 T_jup = 3.400 
[ 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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