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2705 Wu (1980 TD4)
Classification: Main-belt Asteroid          SPK-ID: 2002705
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160252171813713 6.0016e-08  
a 2.189661520575939 1.2642e-08 AU
q 1.838763506366727 1.3028e-07 AU
i 4.525523119703444 5.8711e-06 deg
node 8.327313746483142 6.1004e-05 deg
peri 334.7748845357061 6.3291e-05 deg
M 216.3821565843938 2.0542e-05 deg
tp 2457472.638924977201
(2016-Mar-25.13892498)
6.9886e-05 JED
period 1183.488130370592
3.24
1.025e-05
2.806e-08
d
yr
n .3041855602618263 2.6344e-09 deg/d
Q 2.54055953478515 1.4668e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1249  
   data-arc span      14209 days (38.90 yr)  
   first obs. used      1976-04-01  
   last obs. used      2015-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5098  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:43:50  

Additional Information
 Earth MOID = .832743 AU 
 T_jup = 3.653 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO236407  
rotation period rot_per 150.5 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Oey, J. (2010) Minor Planet Bul. 37, 53-54.]

2705 Wu (1980 TD4)          Discovered 1980-Oct-09 by Shoemaker, C. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1980 TD4 = 1967 TC = 1976 GF8 = 1976 JE1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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