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JPL Small-Body Database Browser
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136983 (1998 SN4)
Classification: Main-belt Asteroid          SPK-ID: 2136983
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198302004103392 5.3327e-08  
a 2.385257027843031 1.4568e-08 au
q 1.912255778920057 1.2511e-07 au
i 2.157629797097492 5.5337e-06 deg
node 56.65840835042943 0.00012798 deg
peri 281.5937289873357 0.00012939 deg
M 230.1428766158358 2.5368e-05 deg
tp 2459085.860557025502
(2020-Aug-24.36055703)
9.8024e-05 TDB
period 1345.554221251822
3.68
1.2327e-05
3.375e-08
d
yr
n .2675477467307693 2.4511e-09 deg/d
Q 2.858258276766004 1.7457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      10007 days (27.40 yr)  
   first obs. used      1991-12-13  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6317  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:13:36  

Additional Information
 Earth MOID = .903742 au 
 Jupiter MOID = 2.52577 au 
 T_jup = 3.508 
[ 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 16.0   n/a MPO234039  

136983 (1998 SN4)          Discovered 1998-Sep-17 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 SN4 = 2001 KN64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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