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129885 (1999 TW7)
Classification: Main-belt Asteroid          SPK-ID: 2129885
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3172394500440795 9.3153e-08  
a 2.557278233962209 1.8158e-08 au
q 1.746008693410343 2.4897e-07 au
i 14.82090854748736 4.1672e-06 deg
node 168.799011503985 2.2349e-05 deg
peri 142.101298927056 2.4307e-05 deg
M 52.76410053361835 1.2171e-05 deg
tp 2458781.571935010923
(2019-Oct-25.07193501)
4.8582e-05 TDB
period 1493.706944664996
4.09
1.5909e-05
4.356e-08
d
yr
n .2410111309221633 2.5669e-09 deg/d
Q 3.368547774514075 2.3918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      617  
   data-arc span      7294 days (19.97 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-08-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53268  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:24:26  

Additional Information
 Earth MOID = .756672 au 
 Jupiter MOID = 2.07705 au 
 T_jup = 3.320 
[ 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 15.8   n/a MPO436629  
diameter diameter 3.603 km 1.263 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

129885 (1999 TW7)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1999 TW7 = 2003 OF31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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