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JPL Small-Body Database Browser
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74861 (1999 TW90)
Classification: Main-belt Asteroid          SPK-ID: 2074861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17131833352128 3.6858e-08  
a 2.20909503823639 8.1528e-09 au
q 1.830636557695603 8.1506e-08 au
i 6.877053866918483 5.5898e-06 deg
node 63.29289759684347 3.561e-05 deg
peri 219.4402523891024 4.0022e-05 deg
M 49.32015108290739 2.0665e-05 deg
tp 2458436.198350055244
(2018-Nov-13.69835006)
6.8376e-05 TDB
period 1199.27844261229
3.28
6.639e-06
1.818e-08
d
yr
n .3001804978799097 1.6617e-09 deg/d
Q 2.587553518777176 9.5495e-09 au
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7386 days (20.22 yr)  
   first obs. used      1999-09-14  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52976  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:27:22  

Additional Information
 Earth MOID = .81977 au 
 Jupiter MOID = 2.55066 au 
 T_jup = 3.630 
[ 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 15.6   n/a MPO280230  

74861 (1999 TW90)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TW90 = 2001 DL3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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