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70644 (1999 TU242)
Classification: Main-belt Asteroid          SPK-ID: 2070644
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06754985357665452 5.1722e-08  
a 2.576941524421541 1.3471e-08 au
q 2.402869501771265 1.3968e-07 au
i 8.363285049111001 4.6763e-06 deg
node 145.9024443406647 2.5834e-05 deg
peri 214.240483425135 3.8524e-05 deg
M 28.52155778713857 2.8306e-05 deg
tp 2458880.791217521010
(2020-Feb-01.29121752)
0.00011874 TDB
period 1510.96801984181
4.14
1.1848e-05
3.244e-08
d
yr
n .2382578554096003 1.8682e-09 deg/d
Q 2.751013547071818 1.438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      953  
   data-arc span      8308 days (22.75 yr)  
   first obs. used      1997-02-02  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57525  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:13:31  

Additional Information
 Earth MOID = 1.4025 au 
 Jupiter MOID = 2.56432 au 
 T_jup = 3.409 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456554.5 (2013-Sep-19.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06956197348585835 5.1903e-08  
q 2.397152008571718 1.4048e-07 au
tp 2455858.225247680165
(2011-Oct-23.72524768)
0.00011514 TDB
node 146.0183871768627 2.5838e-05 deg
peri 214.080782719404 3.7794e-05 deg
i 8.363466063972956 4.6775e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      953  
   data-arc span      8308 days (22.75 yr)  
   first obs. used      1997-02-02  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57525  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:13:31  

Additional Information
 Jupiter MOID = 2.56432 au 
 T_jup = 3.409 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.693891775262911E-15 -7.268503380816734E-15 -4.689734211779092E-13 2.230777450696873E-15 -7.140144590462657E-14 2.289741733089161E-15
q -7.268503380816734E-15 1.973410388124695E-14 1.01738986617813E-12 -6.319134213560617E-15 1.452900601880888E-13 -5.87433806893496E-15
tp -4.689734211779092E-13 1.01738986617813E-12 1.325662841535657E-8 -6.129564811336881E-12 3.18518948242621E-9 4.535016699163692E-12
node 2.230777450696873E-15 -6.319134213560617E-15 -6.129564811336881E-12 6.676131067315111E-10 -6.614046800492474E-10 1.659746685452446E-11
peri -7.140144590462657E-14 1.452900601880888E-13 3.18518948242621E-9 -6.614046800492474E-10 1.428367961838259E-9 -1.524528702270301E-11
i 2.289741733089161E-15 -5.87433806893496E-15 4.535016699163692E-12 1.659746685452446E-11 -1.524528702270301E-11 2.187926671776932E-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 15.2   n/a MPO502590  
diameter diameter 4.563 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70644 (1999 TU242)          Discovered 1999-Oct-04 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TU242 = 1997 CK10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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