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181775 (1997 TW1)
Classification: Main-belt Asteroid          SPK-ID: 2181775
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3163787122856822 1.4031e-07  
a 2.547588652030327 2.1328e-08 au
q 1.741585834867355 3.6937e-07 au
i 12.03713879513213 8.121e-06 deg
node 7.052190682088373 3.6981e-05 deg
peri 299.2801006371317 3.8744e-05 deg
M 293.4332050901398 1.5741e-05 deg
tp 2459475.129718336443
(2021-Sep-17.62971834)
6.7705e-05 TDB
period 1485.225460156183
4.07
1.8651e-05
5.106e-08
d
yr
n .2423874419457793 3.0439e-09 deg/d
Q 3.353591469193299 2.8076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      8208 days (22.47 yr)  
   first obs. used      1997-10-02  
   last obs. used      2020-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60424  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:59  

Additional Information
 Earth MOID = .762634 au 
 Jupiter MOID = 2.07631 au 
 T_jup = 3.341 
[ 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 16.34   n/a E2021B55  

181775 (1997 TW1)          Discovered 1997-Oct-03 by ODAS at Caussols
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1997 TW1 = 2001 QA257 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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