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173146 (1995 UM)
Classification: Main-belt Asteroid          SPK-ID: 2173146
[ 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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180121351985538 3.0456e-08  
a 2.462791502079666 1.0589e-08 au
q 2.172152218370392 7.3496e-08 au
i 5.41566690735687 3.3308e-06 deg
node 231.7039643337461 5.7823e-05 deg
peri 192.6332813738262 6.3073e-05 deg
M 99.39883557031899 2.6429e-05 deg
tp 2458610.720770784505
(2019-May-07.22077078)		 0.00010257 TDB
period 1411.691814219589
3.87		 9.1042e-06
2.493e-08		 d
yr
n .2550131667364063 1.6446e-09 deg/d
Q 2.753430785788941 1.1838e-08 au
   Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      8984 days (24.60 yr)  
   first obs. used      1995-10-17  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:24:38  

Additional Information
 Earth MOID = 1.18573 au 
 Jupiter MOID = 2.53105 au 
 T_jup = 3.473 
[ 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 16.1   n/a MPO359900  

173146 (1995 UM)          Discovered 1995-Oct-17 by Sicoli, P., Ghezzi, P. at Sormano
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1989-Mar-14 00:41 00:01 Iris 0.0415527248513257 0.0415470006854067 0.0415584490237225 2.72223634548164 2.72223629466012 2447599.528696465 1.39853669835106 286.492687078833 75.3834183490042 5.69097809899759 23059.8960134401 T 26 CATAB v2.0f-lin.ifort 2020-Nov-12 10:24:39 2020-Nov-12 10:24

Alternate Designations
 1995 UM = 1999 VN63 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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