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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01025570586768705 3.7452e-08  
a 2.541419566632003 1.2153e-08 au
q 2.515355515070241 9.5417e-08 au
i 4.593004932915449 4.4034e-06 deg
node 25.88609781166748 5.1963e-05 deg
peri 194.7939118543403 0.00023939 deg
M 286.4716294606065 0.00023382 deg
tp 2459698.749382108349
(2022-Apr-29.24938211)
0.00096093 TDB
period 1479.833930233907
4.05
1.0614e-05
2.906e-08
d
yr
n .243270540460643 1.7449e-09 deg/d
Q 2.567483618193766 1.2277e-08 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      9367 days (25.65 yr)  
   first obs. used      1995-09-19  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5671  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:44:38  

Additional Information
 Earth MOID = 1.50663 au 
 Jupiter MOID = 2.38811 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457379.5 (2015-Dec-23.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01040182604378391 3.6664e-08  
q 2.514689168345541 9.3659e-08 au
tp 2456771.559800961608
(2014-Apr-24.05980096)
0.00096609 TDB
node 25.929030284244 5.1891e-05 deg
peri 202.5545124441169 0.00024012 deg
i 4.597192635303644 4.4062e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      9367 days (25.65 yr)  
   first obs. used      1995-09-19  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5671  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:44:38  

Additional Information
 Jupiter MOID = 2.38811 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.344248963649582E-15 -3.40544062788233E-15 -4.585515075819132E-12 1.912944659050682E-14 -1.147960694365894E-12 6.548726185899196E-16
q -3.40544062788233E-15 8.772055374429171E-15 1.001235508272747E-11 -4.91725698633302E-14 2.529696061233407E-12 -1.500623725421727E-15
tp -4.585515075819132E-12 1.001235508272747E-11 9.333225977731738E-7 -5.541874808279644E-10 2.265135596383489E-7 3.798626646342338E-11
node 1.912944659050682E-14 -4.91725698633302E-14 -5.541874808279644E-10 2.69270772319901E-9 -2.818083445790945E-9 -3.417150937142533E-11
peri -1.147960694365894E-12 2.529696061233407E-12 2.265135596383489E-7 -2.818083445790945E-9 5.765889744972015E-8 4.32745714015294E-11
i 6.548726185899196E-16 -1.500623725421727E-15 3.798626646342338E-11 -3.417150937142533E-11 4.32745714015294E-11 1.941476207343719E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.69   n/a MPCxxxxx  

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

Alternate Designations
 1999 TW258 = 2001 CQ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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