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74986 (1999 TZ251)
Classification: Main-belt Asteroid          SPK-ID: 2074986
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 .09944681397542546 3.9187e-08  
a 2.26561529599314 1.2102e-08 au
q 2.040307073112632 9.3307e-08 au
i 8.657783888576205 4.7625e-06 deg
node 138.7414315301227 2.5111e-05 deg
peri 296.0786558727353 3.6237e-05 deg
M 329.788415604373 2.9397e-05 deg
tp 2459105.031860440462
(2020-Sep-12.53186044)
0.00010217 TDB
period 1245.597359799953
3.41
9.9801e-06
2.732e-08
d
yr
n .2890179536490163 2.3157e-09 deg/d
Q 2.490923518873648 1.3305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      7346 days (20.11 yr)  
   first obs. used      1999-09-14  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:19  

Additional Information
 Earth MOID = 1.07249 au 
 Jupiter MOID = 2.70134 au 
 T_jup = 3.595 
[ 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 16.3   n/a MPO436308  

74986 (1999 TZ251)          Discovered 1999-Oct-08 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TZ251 = 2002 PO39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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