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187801 (1999 HZ5)
Classification: Main-belt Asteroid          SPK-ID: 2187801
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2764324701664877 6.5683e-08  
a 2.659040896728865 1.7713e-08 au
q 1.923995653372392 1.7753e-07 au
i 11.78363598551441 5.9692e-06 deg
node 4.829750625348262 3.5553e-05 deg
peri 298.9638908613585 3.6378e-05 deg
M 275.9410653022241 1.0707e-05 deg
tp 2459570.300363132415
(2021-Dec-21.80036313)
4.8902e-05 TDB
period 1583.747536253176
4.34
1.5825e-05
4.333e-08
d
yr
n .2273089566103993 2.2713e-09 deg/d
Q 3.394086140085338 2.261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      7982 days (21.85 yr)  
   first obs. used      1999-04-06  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61391  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:53  

Additional Information
 Earth MOID = .939694 au 
 Jupiter MOID = 2.02555 au 
 T_jup = 3.302 
[ 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 15.97   n/a E2021B55  
diameter diameter 3.035 km 0.711 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187801 (1999 HZ5)          Discovered 1999-Apr-18 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1999 HZ5 = 2000 QZ140 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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