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JPL Small-Body Database Browser
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85730 (1998 SQ77)
Classification: Main-belt Asteroid          SPK-ID: 2085730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2161426318446402 4.1441e-08  
a 2.18479141621037 9.1038e-09 au
q 1.712564849479082 9.168e-08 au
i 3.716912632137622 3.3766e-06 deg
node 42.85177881390715 8.2567e-05 deg
peri 310.2611837826148 8.308e-05 deg
M 258.4503514857583 1.152e-05 deg
tp 2459333.227978861224
(2021-Apr-28.72797886)
3.9023e-05 TDB
period 1179.541969298316
3.23
7.3726e-06
2.019e-08
d
yr
n .305203213934097 1.9076e-09 deg/d
Q 2.657017982941658 1.1072e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      9409 days (25.76 yr)  
   first obs. used      1994-05-01  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Earth MOID = .710523 au 
 Jupiter MOID = 2.78209 au 
 T_jup = 3.644 
[ 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 16.1   n/a MPO257392  

85730 (1998 SQ77)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 SQ77 = 1994 JB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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