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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637483971626165 3.7973e-08  
a 2.637157272847481 1.4221e-08 au
q 2.205326996352969 1.0172e-07 au
i 12.62101684671342 4.2767e-06 deg
node 208.4611001258304 1.6797e-05 deg
peri 194.9078806964599 2.1276e-05 deg
M 327.6698155126735 1.6329e-05 deg
tp 2459140.977948083835
(2020-Oct-18.47794808)
7.163e-05 TDB
period 1564.236706722323
4.28
1.2653e-05
3.464e-08
d
yr
n .2301441964971774 1.8615e-09 deg/d
Q 3.068987549341994 1.6549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1584  
   data-arc span      15637 days (42.81 yr)  
   first obs. used      1977-10-12  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4805  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:05:04  

Additional Information
 Earth MOID = 1.21564 au 
 Jupiter MOID = 2.35504 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 13.5   n/a MPO449003  
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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