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20404 (1998 OB14)
Classification: Main-belt Asteroid          SPK-ID: 2020404
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08680766798450353 4.4575e-08  
a 2.750581061169274 1.6015e-08 au
q 2.511809533646828 1.2428e-07 au
i 18.23939185786912 6.4458e-06 deg
node 325.7126682903357 1.3651e-05 deg
peri 243.5814747419245 3.5752e-05 deg
M 75.58231857334489 3.3517e-05 deg
tp 2458850.673416279536
(2020-Jan-02.17341628)
0.00015478 TDB
period 1666.230575040609
4.56
1.4552e-05
3.984e-08
d
yr
n .216056532266686 1.8869e-09 deg/d
Q 2.98935258869172 1.7405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      13636 days (37.33 yr)  
   first obs. used      1983-04-15  
   last obs. used      2020-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51209  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:19:43  

Additional Information
 Earth MOID = 1.56332 au 
 Jupiter MOID = 2.12361 au 
 T_jup = 3.268 
[ 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 13.92   n/a E2021B10  
diameter diameter 5.038 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.175   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20404 (1998 OB14)          Discovered 1998-Jul-26 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 OB14 = 1985 RY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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