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70657 (1999 TW258)
Classification: Main-belt Asteroid          SPK-ID: 2070657
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01056670201175339 4.339e-08  
a 2.540782638297082 1.3657e-08 au
q 2.51393494528156 1.0791e-07 au
i 4.593338441507972 4.9197e-06 deg
node 25.89773841162835 5.4598e-05 deg
peri 195.3017130232793 0.00024514 deg
M 189.6233614648592 0.00023818 deg
tp 2459700.595427753127
(2022-May-01.09542775)
0.00097745 TDB
period 1479.277653075324
4.05
1.1927e-05
3.265e-08
d
yr
n .2433620214917619 1.9621e-09 deg/d
Q 2.567630331312604 1.3801e-08 au
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      8793 days (24.07 yr)  
   first obs. used      1995-09-19  
   last obs. used      2019-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58614  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:21:30  

Additional Information
 Earth MOID = 1.50479 au 
 Jupiter MOID = 2.39022 au 
 T_jup = 3.441 
[ 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 MPO432259  

70657 (1999 TW258)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TW258 = 2001 CQ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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