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181777 (1997 TN9)
Classification: Main-belt Asteroid          SPK-ID: 2181777
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1023383178590664 4.1404e-08  
a 2.717833859240653 1.6967e-08 au
q 2.43969531386555 1.143e-07 au
i 4.05464855209598 5.2766e-06 deg
node 218.0012005617057 6.8246e-05 deg
peri 205.6640355394748 7.4441e-05 deg
M 33.94374763188004 2.9025e-05 deg
tp 2459046.191420544689
(2020-Jul-15.69142054)
0.00013152 TDB
period 1636.563210590757
4.48
1.5325e-05
4.196e-08
d
yr
n .2199731716259523 2.0598e-09 deg/d
Q 2.995972404615756 1.8703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      8531 days (23.36 yr)  
   first obs. used      1997-10-02  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5764  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:00  

Additional Information
 Earth MOID = 1.45287 au 
 Jupiter MOID = 2.28356 au 
 T_jup = 3.349 
[ 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 16.79   n/a MPCxxxxx  

181777 (1997 TN9)          Discovered 1997-Oct-02 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1997 TN9 = 2006 UM251 = 2006 UZ219 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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