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78677 (2002 TW128)
Classification: Main-belt Asteroid          SPK-ID: 2078677
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09241496477660245 4.053e-08  
a 2.776494068533885 1.5658e-08 au
q 2.51990446698788 1.1274e-07 au
i 7.981667449982291 4.7005e-06 deg
node 299.8472347448019 2.4396e-05 deg
peri 221.4051057012621 3.2121e-05 deg
M 148.3865829591104 2.2606e-05 deg
tp 2458303.976641944603
(2018-Jul-04.47664194)
0.00010398 TDB
period 1689.83208521649
4.63
1.4294e-05
3.913e-08
d
yr
n .2130389185703497 1.8021e-09 deg/d
Q 3.033083670079889 1.7104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1022  
   data-arc span      7996 days (21.89 yr)  
   first obs. used      1998-12-11  
   last obs. used      2020-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:58  

Additional Information
 Earth MOID = 1.5356 au 
 Jupiter MOID = 2.00294 au 
 T_jup = 3.315 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO385310  

78677 (2002 TW128)          Discovered 2002-Oct-04 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 TW128 = 1998 XJ99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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