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4098 Thraen (1987 WQ1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004098
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .126944877019901 3.3614e-08  
a 3.223462872526065 1.8007e-08 au
q 2.814260774595027 1.0949e-07 au
i 2.934053718115697 3.5704e-06 deg
node 99.36022982626407 7.4168e-05 deg
peri 10.82280005344179 7.6033e-05 deg
M 228.1331976471356 1.9111e-05 deg
tp 2459974.810965844296
(2023-Jan-30.31096584)
0.00011513 TDB
period 2113.890249329244
5.79
1.7713e-05
4.85e-08
d
yr
n .170302124301028 1.427e-09 deg/d
Q 3.632664970457104 2.0293e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1763  
   data-arc span      22665 days (62.05 yr)  
   first obs. used      1958-12-03  
   last obs. used      2020-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51649  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:56:34  

Additional Information
 Earth MOID = 1.8309 au 
 Jupiter MOID = 1.47973 au 
 T_jup = 3.174 
[ 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 13.01   n/a MPCxxxxx  
diameter diameter 13.854 km 2.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.064   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4098 Thraen (1987 WQ1)          Discovered 1987-Nov-26 by Borngen, F. at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 WQ1 = 1958 XZ = 1977 DP1 = 1981 WM8 = 1987 YB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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