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15689 (1981 UP25)
Classification: Main-belt Asteroid          SPK-ID: 2015689
[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954045183518038 4.7949e-08  
a 2.541551859997349 1.2952e-08 au
q 2.044921142928436 1.2231e-07 au
i 7.733671489215513 4.4666e-06 deg
node 201.2578230298711 3.2122e-05 deg
peri 1.121724594014026 3.4781e-05 deg
M 30.44366189329048 1.2633e-05 deg
tp 2458875.346995531526
(2020-Jan-26.84699553)		 5.2302e-05 TDB
period 1479.949480669414
4.05		 1.1313e-05
3.097e-08		 d
yr
n .2432515465576325 1.8595e-09 deg/d
Q 3.038182577066263 1.5483e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2066  
   data-arc span      14194 days (38.86 yr)  
   first obs. used      1981-09-24  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:01:21  

Additional Information
 Earth MOID = 1.04185 au 
 Jupiter MOID = 1.92106 au 
 T_jup = 3.406 
[ 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 13.2   n/a MPO431679  

15689 (1981 UP25)          Discovered 1981-Oct-25 by Bus, S. J. at Palomar
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 UP25 = 1981 ST8 = 1999 BM23 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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