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74835 (1999 TW30)
Classification: Main-belt Asteroid          SPK-ID: 2074835
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640088713459141 3.6284e-08  
a 2.387568036988941 8.6944e-09 au
q 1.995985697980805 8.5474e-08 au
i .9878006957406442 3.9001e-06 deg
node 308.2043060161589 0.00021692 deg
peri 141.8550570867142 0.00021744 deg
M 158.3385895304241 1.2779e-05 deg
tp 2458407.825376589584
(2018-Oct-16.32537659)
4.7268e-05 TDB
period 1347.510199885625
3.69
7.3605e-06
2.015e-08
d
yr
n .267159387758665 1.4593e-09 deg/d
Q 2.779150375997077 1.012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      973  
   data-arc span      8104 days (22.19 yr)  
   first obs. used      1997-02-18  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52363  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:22:52  

Additional Information
 Earth MOID = 1.01265 au 
 Jupiter MOID = 2.40892 au 
 T_jup = 3.516 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO432301  
diameter diameter 2.120 km 0.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.143   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74835 (1999 TW30)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TW30 = 2001 GY9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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