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JPL Small-Body Database Browser
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85609 (1998 HZ8)
Classification: Main-belt Asteroid          SPK-ID: 2085609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825474379638123 6.195e-08  
a 2.309414537289111 8.681e-09 au
q 1.8878368303106 1.4362e-07 au
i 7.50113013034203 5.5139e-06 deg
node 66.79989344829339 3.393e-05 deg
peri 338.1864777124869 3.5889e-05 deg
M 151.6331561786531 1.1155e-05 deg
tp 2458060.563180810386
(2017-Nov-03.06318081)
3.865e-05 TDB
period 1281.891505834298
3.51
7.2279e-06
1.979e-08
d
yr
n .2808349991879383 1.5835e-09 deg/d
Q 2.730992244267621 1.0266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      8193 days (22.43 yr)  
   first obs. used      1996-12-03  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55429  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:45  

Additional Information
 Earth MOID = .899389 au 
 Jupiter MOID = 2.65674 au 
 T_jup = 3.552 
[ 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 16.2   n/a MPO385350  
diameter diameter 1.573 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.236   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

85609 (1998 HZ8)          Discovered 1998-Apr-17 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 HZ8 = 2003 UR278 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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