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187774 (1998 SR6)
Classification: Main-belt Asteroid          SPK-ID: 2187774
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08752983177520668 4.4257e-08  
a 3.089060295456456 2.4098e-08 au
q 2.818675367451682 1.3146e-07 au
i 11.15849714332914 5.6103e-06 deg
node 165.3798765141507 2.1207e-05 deg
peri 150.0546582842628 3.6129e-05 deg
M 59.30234464865594 2.9297e-05 deg
tp 2458873.831416998933
(2020-Jan-25.33141700)
0.0001608 TDB
period 1983.069819197265
5.43
2.3205e-05
6.353e-08
d
yr
n .1815367247864858 2.1243e-09 deg/d
Q 3.35944522346123 2.6208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      8176 days (22.38 yr)  
   first obs. used      1998-08-24  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47178  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:57:20  

Additional Information
 Earth MOID = 1.81014 au 
 Jupiter MOID = 2.00949 au 
 T_jup = 3.191 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO436929  

187774 (1998 SR6)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1998 SR6 = 2002 GF158 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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