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15660 (3025 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2015660
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1867457605930383 3.8993e-08  
a 2.301473547596679 5.691e-09 au
q 1.871683119465979 8.9055e-08 au
i 2.35686693414759 3.1094e-06 deg
node 121.8081773453227 8.5831e-05 deg
peri 257.5556727651102 8.6212e-05 deg
M 119.6119277621415 8.4855e-06 deg
tp 2458576.779576767655
(2019-Apr-03.27957677)
2.9445e-05 TDB
period 1275.285460384702
3.49
4.7302e-06
1.295e-08
d
yr
n .2822897391862388 1.0471e-09 deg/d
Q 2.731263975727379 6.7538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1401  
   data-arc span      17035 days (46.64 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:13  

Additional Information
 Earth MOID = .875603 au 
 Jupiter MOID = 2.72913 au 
 T_jup = 3.566 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456765.5 (2014-Apr-18.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .187104028785246 3.9162e-08  
q 1.870600177932173 8.9517e-08 au
tp 2457299.311918541353
(2015-Oct-03.81191854)
2.7852e-05 TDB
node 121.8763416506554 8.5842e-05 deg
peri 257.0824431973286 8.6219e-05 deg
i 2.356801002491253 3.1102e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1401  
   data-arc span      17035 days (46.64 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:13  

Additional Information
 Jupiter MOID = 2.72913 au 
 T_jup = 3.566 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.53368728715069E-15 -3.50118709819833E-15 -7.083649017570068E-14 3.736574372670543E-15 -8.861220220209994E-14 -1.432010348972237E-15
q -3.50118709819833E-15 8.013382300002214E-15 1.944197254029834E-13 -8.514348422380969E-15 2.084836824627539E-13 3.280454130552818E-15
tp -7.083649017570068E-14 1.944197254029834E-13 7.757516767494009E-10 2.036354989728233E-12 2.302560866786901E-10 3.882742074759833E-14
node 3.736574372670543E-15 -8.514348422380969E-15 2.036354989728233E-12 7.368834416441576E-9 -7.361928595364742E-9 3.353136070325445E-11
peri -8.861220220209994E-14 2.084836824627539E-13 2.302560866786901E-10 -7.361928595364742E-9 7.433632793194798E-9 -3.343673154897644E-11
i -1.432010348972237E-15 3.280454130552818E-15 3.882742074759833E-14 3.353136070325445E-11 -3.343673154897644E-11 9.673273539140322E-12

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 15.3   n/a MPO449064  

15660 (3025 T-2)          Discovered 1973-Sep-30 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 3025 T-2 = 1980 RF2 = 1987 SB10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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