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19554 (1999 JU74)
Classification: Main-belt Asteroid          SPK-ID: 2019554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1374652096082732 3.1883e-08  
a 2.643329367048412 1.2737e-08 au
q 2.279963541543398 8.6024e-08 au
i 13.05184611779771 3.9926e-06 deg
node 131.5512160859022 2.0581e-05 deg
peri 137.250890036637 2.7775e-05 deg
M 340.6404010090598 1.9508e-05 deg
tp 2459284.914918350009
(2021-Mar-11.41491835)
8.5243e-05 TDB
period 1569.731409221052
4.30
1.1346e-05
3.106e-08
d
yr
n .2293385976003646 1.6576e-09 deg/d
Q 3.006695192553426 1.4488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1523  
   data-arc span      10593 days (29.00 yr)  
   first obs. used      1991-08-06  
   last obs. used      2020-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5274  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:57:49  

Additional Information
 Earth MOID = 1.27947 au 
 Jupiter MOID = 2.19925 au 
 T_jup = 3.344 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.41   n/a E2021B10  
diameter diameter 3.626 km 0.483 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.177   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19554 (1999 JU74)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JU74 = 1991 PK7 = 1998 BN42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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