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85757 (1998 SN157)
Classification: Main-belt Asteroid          SPK-ID: 2085757
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04786985254546777 4.5106e-08  
a 2.562083504565047 1.498e-08 au
q 2.439436944992343 1.175e-07 au
i 5.005768480393278 4.8622e-06 deg
node 231.2429099428211 5.5223e-05 deg
peri 225.2565971145563 7.3948e-05 deg
M 20.97415290509956 4.9112e-05 deg
tp 2458913.228934889529
(2020-Mar-04.72893489)
0.00020435 TDB
period 1497.919061710044
4.10
1.3137e-05
3.597e-08
d
yr
n .2403334126671832 2.1078e-09 deg/d
Q 2.68473006413775 1.5698e-08 au
  Orbit Determination Parameters
   # obs. used (total)      525  
   data-arc span      7781 days (21.30 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56314  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:38:33  

Additional Information
 Earth MOID = 1.45911 au 
 Jupiter MOID = 2.40581 au 
 T_jup = 3.427 
[ 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 15.6   n/a MPO449532  

85757 (1998 SN157)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 SN157 = 2000 CP32 = 2003 YZ178 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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