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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2544055093571689 3.8427e-08  
a 3.103585309241456 1.6166e-08 au
q 2.314016107810457 1.2319e-07 au
i 8.377118011215051 4.432e-06 deg
node 72.26165545268495 2.946e-05 deg
peri 168.0497741094188 3.077e-05 deg
M 59.98122484145891 7.3877e-06 deg
tp 2459063.758640036933
(2020-Aug-02.25864004)
4.1255e-05 TDB
period 1997.073082507436
5.47
1.5603e-05
4.272e-08
d
yr
n .1802638086474031 1.4084e-09 deg/d
Q 3.893154510672455 2.0278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      9368 days (25.65 yr)  
   first obs. used      1995-12-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53159  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:54:09  

Additional Information
 Earth MOID = 1.30252 au 
 Jupiter MOID = 1.13129 au 
 T_jup = 3.154 
[ 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 14.51   n/a MPO637175  
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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