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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07383173602565889 5.0895e-08  
a 3.142181053455502 3.2424e-08 au
q 2.910188371371949 1.6642e-07 au
i 7.773412948288918 6.8221e-06 deg
node 312.5788315798154 3.8387e-05 deg
peri 85.33301676619703 6.2545e-05 deg
M 255.1003280138153 5.1267e-05 deg
tp 2459593.311834063893
(2022-Jan-13.81183406)
0.00029392 TDB
period 2034.441635728925
5.57
3.149e-05
8.621e-08
d
yr
n .1769527292784759 2.739e-09 deg/d
Q 3.374173735539055 3.4818e-08 au
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      8010 days (21.93 yr)  
   first obs. used      1998-06-26  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:42:15  

Additional Information
 Earth MOID = 1.93081 au 
 Jupiter MOID = 1.96245 au 
 T_jup = 3.192 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457185.5 (2015-Jun-12.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0778375280369529 5.0502e-08  
q 2.891525649867583 1.6501e-07 au
tp 2457566.369043589551
(2016-Jun-26.86904359)
0.00026556 TDB
node 312.7493815016193 3.8522e-05 deg
peri 85.79490082127781 6.0605e-05 deg
i 7.763788588216074 6.8159e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      8010 days (21.93 yr)  
   first obs. used      1998-06-26  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:42:15  

Additional Information
 Jupiter MOID = 1.96245 au 
 T_jup = 3.192 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.550479927134136E-15 -8.204400686215458E-15 -6.36428457714829E-12 7.946186814825406E-15 -1.096504838620863E-12 4.832807879099146E-16
q -8.204400686215458E-15 2.722882038624675E-14 2.276278821292961E-11 -2.787452318486678E-14 3.902342494248073E-12 1.580313407746879E-16
tp -6.36428457714829E-12 2.276278821292961E-11 7.052156764190348E-8 -4.785803498410665E-11 1.245547777485024E-8 7.606506585564582E-12
node 7.946186814825406E-15 -2.787452318486678E-14 -4.785803498410665E-11 1.483973051984775E-9 -1.478226105111484E-9 9.562904068252301E-11
peri -1.096504838620863E-12 3.902342494248073E-12 1.245547777485024E-8 -1.478226105111484E-9 3.672925401596749E-9 -9.344964142985963E-11
i 4.832807879099146E-16 1.580313407746879E-16 7.606506585564582E-12 9.562904068252301E-11 -9.344964142985963E-11 4.645600408475306E-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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