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9149 (1977 TD1)
Classification: Main-belt Asteroid          SPK-ID: 2009149
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1638713050533753 2.1163e-08  
a 2.637500004014243 8.3185e-09 au
q 2.205289436278146 5.5358e-08 au
i 12.62042982529237 3.9853e-07 deg
node 208.46084186 5.4696e-06 deg
peri 194.9307122644669 8.6501e-06 deg
M 13.68073285473269 6.2081e-06 deg
tp 2459141.044232181335
(2020-Oct-18.54423218)
2.6961e-05 TDB
period 1564.541654456392
4.28
7.4017e-06
2.026e-08
d
yr
n .2300993386622767 1.0886e-09 deg/d
Q 3.06971057175034 9.6817e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2196  
   data-arc span      15868 days (43.44 yr)  
   first obs. used      1977-10-12  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42259  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:12:06  

Additional Information
 Earth MOID = 1.2146 au 
 Jupiter MOID = 2.35536 au 
 T_jup = 3.344 
[ 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 13.40   n/a MPCxxxxx  
diameter diameter 7.177 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9149 (1977 TD1)          Discovered 1977-Oct-12 by Wild, P. at Zimmerwald
Reference: 19980910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1977 TD1 = 1990 UH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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