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JPL Small-Body Database Browser
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91879 (1999 UZ45)
Classification: Main-belt Asteroid          SPK-ID: 2091879
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07383173586079718 5.4362e-08  
a 3.142181052668747 3.3666e-08 au
q 2.910188371161307 1.7426e-07 au
i 7.773414224977187 7.2431e-06 deg
node 312.5788389341315 4.1661e-05 deg
peri 85.33300996327257 6.5642e-05 deg
M 255.1003277639215 5.1948e-05 deg
tp 2459593.311835253452
(2022-Jan-13.81183525)
0.00029732 TDB
period 2034.441634964835
5.57
3.2697e-05
8.952e-08
d
yr
n .1769527293449353 2.8439e-09 deg/d
Q 3.374173734176188 3.6152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      465  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      1998-06-26  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5914  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:39:09  

Additional Information
 Earth MOID = 1.93081 au 
 Jupiter MOID = 1.96245 au 
 T_jup = 3.192 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457049.5 (2015-Jan-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07792113612952031 5.3851e-08  
q 2.891161368447842 1.7257e-07 au
tp 2457566.496853280573
(2016-Jun-26.99685328)
0.00026986 TDB
node 312.7495040744602 4.1805e-05 deg
peri 85.83182245136449 6.3661e-05 deg
i 7.764037023353565 7.2368e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      465  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      1998-06-26  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5914  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:39:09  

Additional Information
 Jupiter MOID = 1.96245 au 
 T_jup = 3.192 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.899969506604213E-15 -9.148512002594406E-15 -7.274578962167253E-12 1.624027435491178E-14 -1.29037081045425E-12 2.054588299404653E-15
q -9.148512002594406E-15 2.977947355949287E-14 2.521868817678081E-11 -5.438784056395429E-14 4.429756888765391E-12 -4.685610392197363E-15
tp -7.274578962167253E-12 2.521868817678081E-11 7.282640328507102E-8 -1.150756181083938E-10 1.29947728081377E-8 -3.348064356505865E-12
node 1.624027435491178E-14 -5.438784056395429E-14 -1.150756181083938E-10 1.74767667882946E-9 -1.751667460913528E-9 1.351068242278319E-10
peri -1.29037081045425E-12 4.429756888765391E-12 1.29947728081377E-8 -1.751667460913528E-9 4.052724660682381E-9 -1.34566710289493E-10
i 2.054588299404653E-15 -4.685610392197363E-15 -3.348064356505865E-12 1.351068242278319E-10 -1.34566710289493E-10 5.237083135116877E-11

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 14.9   n/a MPO348078  
diameter diameter 4.368 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.134   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91879 (1999 UZ45)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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