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70656 (1999 TF257)
Classification: Main-belt Asteroid          SPK-ID: 2070656
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135071909032782 4.7471e-08  
a 2.467581321139126 1.3242e-08 au
q 2.13428040139923 1.1545e-07 au
i 5.116556536977289 4.303e-06 deg
node 304.8167277194387 5.6625e-05 deg
peri 310.9660826621965 5.9961e-05 deg
M 205.1210968582115 2.3793e-05 deg
tp 2459609.609539969692
(2022-Jan-30.10953997)
9.5959e-05 TDB
period 1415.81215995792
3.88
1.1396e-05
3.12e-08
d
yr
n .2542710185584928 2.0467e-09 deg/d
Q 2.800882240879022 1.503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      7972 days (21.83 yr)  
   first obs. used      1998-04-01  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56101  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:13:48  

Additional Information
 Earth MOID = 1.12345 au 
 Jupiter MOID = 2.27119 au 
 T_jup = 3.468 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457238.5 (2015-Aug-04.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355306879871629 4.7328e-08  
q 2.132685642488812 1.1512e-07 au
tp 2456779.492419473261
(2014-May-01.99241947)
8.6683e-05 TDB
node 304.8880041868637 5.6629e-05 deg
peri 311.1014561729625 5.996e-05 deg
i 5.117011642389357 4.3019e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      7972 days (21.83 yr)  
   first obs. used      1998-04-01  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56101  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:13:48  

Additional Information
 Jupiter MOID = 2.27119 au 
 T_jup = 3.468 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.23998650874416E-15 -5.422793114384015E-15 -4.227757782620947E-14 -1.008192201509199E-14 -8.371953491234345E-15 3.303045855357206E-15
q -5.422793114384015E-15 1.325366043203927E-14 3.93532862617699E-13 2.320344311098376E-14 9.271200446858893E-14 -7.922279057037702E-15
tp -4.227757782620947E-14 3.93532862617699E-13 7.514007512031803E-9 -3.958316916651859E-11 1.74399729053464E-9 -2.767704189959317E-12
node -1.008192201509199E-14 2.320344311098376E-14 -3.958316916651859E-11 3.206882544898304E-9 -3.202326508847934E-9 -5.683572493041796E-11
peri -8.371953491234345E-15 9.271200446858893E-14 1.74399729053464E-9 -3.202326508847934E-9 3.595198017088574E-9 5.598631851831505E-11
i 3.303045855357206E-15 -7.922279057037702E-15 -2.767704189959317E-12 -5.683572493041796E-11 5.598631851831505E-11 1.850654974816228E-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 15.6   n/a MPO351340  

70656 (1999 TF257)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TF257 = 1998 HQ154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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