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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06854432566341563 3.2634e-08  
a 2.978430449897232 1.6064e-08 au
q 2.774275943173643 9.8196e-08 au
i 11.50234954676765 3.9174e-06 deg
node 125.1958663245632 2.1719e-05 deg
peri 169.0530810965831 4.7917e-05 deg
M 67.30035787719268 4.0263e-05 deg
tp 2458849.510200946915
(2020-Jan-01.01020095)
0.00021101 TDB
period 1877.498599482651
5.14
1.5189e-05
4.159e-08
d
yr
n .1917444839102404 1.5513e-09 deg/d
Q 3.182584956620822 1.7165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1304  
   data-arc span      8857 days (24.25 yr)  
   first obs. used      1996-11-11  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50999  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:59:22  

Additional Information
 Earth MOID = 1.75729 au 
 Jupiter MOID = 2.02581 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 14.07   n/a E2021B10  
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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