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19611 (1999 NP64)
Classification: Main-belt Asteroid          SPK-ID: 2019611
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06888678117993821 4.5399e-08  
a 2.979686441092162 1.9442e-08 au
q 2.774425433239817 1.4304e-07 au
i 11.50182145296056 4.546e-06 deg
node 125.1937964866436 2.6489e-05 deg
peri 169.2460096218207 5.0432e-05 deg
M 28.75872744288315 4.0935e-05 deg
tp 2458850.420477921886
(2020-Jan-01.92047792)
0.00021393 TDB
period 1878.686324192394
5.14
1.8387e-05
5.034e-08
d
yr
n .1916232610863105 1.8754e-09 deg/d
Q 3.184947448944506 2.0781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      8321 days (22.78 yr)  
   first obs. used      1996-11-11  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:52:02  

Additional Information
 Earth MOID = 1.75939 au 
 Jupiter MOID = 2.02477 au 
 T_jup = 3.226 
[ 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 MPO347676  
diameter diameter 5.605 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.170   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19611 (1999 NP64)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 NP64 = 1998 HS112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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