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11714 Mikebrown (1998 HQ51)
Classification: Main-belt Asteroid          SPK-ID: 2011714
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2563185553327311 3.3192e-08  
a 2.671104639113584 1.1424e-08 au
q 1.986450956873433 9.168e-08 au
i 3.01630288365883 4.3105e-06 deg
node 178.7191252685911 6.5746e-05 deg
peri 135.1648321465815 6.6242e-05 deg
M 293.2711432559336 9.2032e-06 deg
tp 2459296.060207461403
(2021-Mar-22.56020746)
4.1591e-05 TDB
period 1594.537653989802
4.37
1.023e-05
2.801e-08
d
yr
n .2257707738034403 1.4484e-09 deg/d
Q 3.355758321353734 1.4352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      15622 days (42.77 yr)  
   first obs. used      1977-09-08  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52198  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:18:50  

Additional Information
 Earth MOID = .974025 au 
 Jupiter MOID = 1.9588 au 
 T_jup = 3.331 
[ 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 14.1   n/a MPO389700  
diameter diameter 4.451 km 0.945 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.246   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11714 Mikebrown           Discovered 1998 Apr. 28 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Michael E. Brown (b. 1965) is assistant professor of astronomy at the California Institute of Technology. He is best known for his work on the Kuiper belt, cometary comae and the atmospheres of planetary satellites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1998 HQ51 = 1977 RX8 = 1986 TH5 = 1986 TW10 = 1986 UR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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