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19715 (1999 UA4)
Classification: Main-belt Asteroid          SPK-ID: 2019715
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05660539900840074 1.3794e-08  
a 3.066117720077184 1.4238e-08 au
q 2.892558903125487 4.3251e-08 au
i 9.715126103051041 1.1562e-06 deg
node 192.4342739432449 4.371e-06 deg
peri 175.9065867140388 2.3855e-05 deg
M 4.338213503841415 2.1797e-05 deg
tp 2459176.868565491142
(2020-Nov-23.36856549)
0.00011877 TDB
period 1961.018381335006
5.37
1.3659e-05
3.74e-08
d
yr
n .1835780854613521 1.2787e-09 deg/d
Q 3.239676537028882 1.5044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2268  
   data-arc span      24372 days (66.73 yr)  
   first obs. used      1954-05-23  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47823  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:03:38  

Additional Information
 Earth MOID = 1.89019 au 
 Jupiter MOID = 2.05951 au 
 T_jup = 3.208 
[ 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 13.05   n/a E2021B10  
diameter diameter 14.651 km 2.874 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.067   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19715 (1999 UA4)          Discovered 1999-Oct-27 by Sposetti, S. at Gnosca
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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