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102473 (1999 TW244)
Classification: Main-belt Asteroid          SPK-ID: 2102473
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3037543810080386 3.7925e-08  
a 2.671906476597491 1.5831e-08 au
q 1.860303178687251 9.9839e-08 au
i 12.45447749797579 3.9853e-06 deg
node 189.4890428742744 2.0395e-05 deg
peri 271.0067622272546 2.1171e-05 deg
M 250.6109224168779 6.831e-06 deg
tp 2459685.232082942113
(2022-Apr-15.73208294)
3.2248e-05 TDB
period 1595.255702988807
4.37
1.4178e-05
3.882e-08
d
yr
n .2256691509239042 2.0056e-09 deg/d
Q 3.483509774507731 2.064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      7602 days (20.81 yr)  
   first obs. used      1999-09-30  
   last obs. used      2020-07-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53402  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:54:34  

Additional Information
 Earth MOID = .924753 au 
 Jupiter MOID = 1.92839 au 
 T_jup = 3.281 
[ 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 15.61   n/a E2021B55  
diameter diameter 4.195 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102473 (1999 TW244)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 TW244 = 2001 HW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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