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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2277551597774541 4.3282e-08  
a 3.1043735533835 1.7746e-08 au
q 2.397336458723738 1.409e-07 au
i 15.32957806983626 4.4856e-06 deg
node 101.7661190560638 1.6212e-05 deg
peri 72.22940529097708 1.9426e-05 deg
M 351.2257538798733 9.3378e-06 deg
tp 2459049.193018880920
(2020-Jul-18.69301888)
5.1943e-05 TDB
period 1997.833951445854
5.47
1.7131e-05
4.69e-08
d
yr
n .1801951557282646 1.5451e-09 deg/d
Q 3.811410648043262 2.1788e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1053  
   data-arc span      8196 days (22.44 yr)  
   first obs. used      1998-01-02  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:01  

Additional Information
 Earth MOID = 1.45604 au 
 Jupiter MOID = 1.51035 au 
 T_jup = 3.127 
[ 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 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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