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JPL Small-Body Database Browser
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74549 (1999 JU80)
Classification: Main-belt Asteroid          SPK-ID: 2074549
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2277551630123747 4.3473e-08  
a 3.104373557506912 1.8175e-08 au
q 2.39733645186562 1.4129e-07 au
i 15.32957846463364 4.6065e-06 deg
node 101.7661178434016 1.6679e-05 deg
peri 72.22940802396081 1.9815e-05 deg
M 351.2257513779247 9.6443e-06 deg
tp 2459049.193032862596
(2020-Jul-18.69303286)
5.3664e-05 TDB
period 1997.833955426316
5.47
1.7545e-05
4.804e-08
d
yr
n .1801951553692459 1.5825e-09 deg/d
Q 3.811410663148203 2.2314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      8068 days (22.09 yr)  
   first obs. used      1998-01-02  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:40  

Additional Information
 Earth MOID = 1.45604 au 
 Jupiter MOID = 1.51035 au 
 T_jup = 3.127 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457179.5 (2015-Jun-06.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289106451822079 4.3434e-08  
q 2.392441505882814 1.4117e-07 au
tp 2457050.556145149087
(2015-Jan-28.05614515)
5.0058e-05 TDB
node 101.7978772512829 1.6681e-05 deg
peri 72.0544496824028 1.9785e-05 deg
i 15.33282584469587 4.6076e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      8068 days (22.09 yr)  
   first obs. used      1998-01-02  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52307  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:40  

Additional Information
 Jupiter MOID = 1.51035 au 
 T_jup = 3.127 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.886524301268702E-15 -6.106706807937536E-15 -6.237291347299854E-14 -2.304705207459477E-15 2.466339269158851E-14 -7.590012039763638E-15
q -6.106706807937536E-15 1.992827746635554E-14 2.068205491472406E-13 6.568222387931712E-15 -7.373720501940183E-14 2.497564539922953E-14
tp -6.237291347299854E-14 2.068205491472406E-13 2.50578800133923E-9 -2.237419868031893E-12 5.517933716883676E-10 -1.603735209450356E-12
node -2.304705207459477E-15 6.568222387931712E-15 -2.237419868031893E-12 2.782618428573756E-10 -2.687515287255777E-10 8.220573456049634E-12
peri 2.466339269158851E-14 -7.373720501940183E-14 5.517933716883676E-10 -2.687515287255777E-10 3.914282662370197E-10 -8.411505833446901E-12
i -7.590012039763638E-15 2.497564539922953E-14 -1.603735209450356E-12 8.220573456049634E-12 -8.411505833446901E-12 2.122998627194825E-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 14.0   n/a MPO337819  
diameter diameter 4.552 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74549 (1999 JU80)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JU80 = 2002 VL40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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