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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .195799019027625 4.7356e-08  
a 2.542807386226233 1.2996e-08 au
q 2.044928194426938 1.2092e-07 au
i 7.733066277851072 4.3097e-06 deg
node 201.2153269903966 3.1971e-05 deg
peri 1.251715192943509 3.4595e-05 deg
M 78.96009966120499 1.2402e-05 deg
tp 2458875.656777334299
(2020-Jan-27.15677733)
5.1966e-05 TDB
period 1481.046258318107
4.05
1.1354e-05
3.109e-08
d
yr
n .2430714084574374 1.8635e-09 deg/d
Q 3.040686578025529 1.5541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2176  
   data-arc span      14251 days (39.02 yr)  
   first obs. used      1981-09-24  
   last obs. used      2020-09-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41921  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:05:50  

Additional Information
 Earth MOID = 1.04103 au 
 Jupiter MOID = 1.91743 au 
 T_jup = 3.405 
[ 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 13.26   n/a E2021B10  

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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