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190349 (1998 WL7)
Classification: Main-belt Asteroid          SPK-ID: 2190349
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2563356067804545 4.826e-08  
a 2.302444851020545 9.6789e-09 au
q 1.712246253055661 1.0823e-07 au
i 24.73005398953655 6.4911e-06 deg
node 269.6667850514347 1.1932e-05 deg
peri 149.2061788414943 1.9011e-05 deg
M 136.7657120771438 1.3772e-05 deg
tp 2458715.706250237141
(2019-Aug-20.20625024)
4.8094e-05 TDB
period 1276.092869067844
3.49
8.0466e-06
2.203e-08
d
yr
n .2821111289987628 1.7789e-09 deg/d
Q 2.89264344898543 1.216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      7878 days (21.57 yr)  
   first obs. used      1998-10-30  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51282  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:02:53  

Additional Information
 Earth MOID = .753793 au 
 Jupiter MOID = 2.47733 au 
 T_jup = 3.428 
[ 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 14.72   n/a E2021B55  
diameter diameter 2.778 km 0.465 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.231   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190349 (1998 WL7)          Discovered 1998-Nov-23 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 1998 WL7 = 1999 BO8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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