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85625 (1998 HW140)
Classification: Main-belt Asteroid          SPK-ID: 2085625
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2532905090479806 4.8416e-08  
a 3.100133626783605 1.8489e-08 au
q 2.314899202338824 1.5733e-07 au
i 8.383452630720994 4.9934e-06 deg
node 72.3203248602412 3.0098e-05 deg
peri 167.9714888346744 3.1719e-05 deg
M 348.6169199681635 7.6031e-06 deg
tp 2459063.541470686427
(2020-Aug-02.04147069)
4.2009e-05 TDB
period 1993.742412742399
5.46
1.7836e-05
4.883e-08
d
yr
n .1805649504666046 1.6153e-09 deg/d
Q 3.885368051228387 2.3172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      816  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1995-12-16  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53382  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:17:24  

Additional Information
 Earth MOID = 1.3031 au 
 Jupiter MOID = 1.14129 au 
 T_jup = 3.156 
[ 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 14.4   n/a MPO302496  
diameter diameter 6.561 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85625 (1998 HW140)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HW140 = 1995 YX25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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