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90914 (1997 HQ11)
Classification: Outer Main-belt Asteroid          SPK-ID: 2090914
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1397387001419434 4.7963e-08  
a 3.216756327981716 2.4026e-08 au
q 2.76725098003618 1.6667e-07 au
i 5.977739867447104 4.7866e-06 deg
node 236.3776427599852 4.3535e-05 deg
peri 76.43702515570065 4.7842e-05 deg
M 350.4312860053745 1.7818e-05 deg
tp 2459452.511441009893
(2021-Aug-26.01144101)
0.00010418 TDB
period 2107.296630967056
5.77
2.361e-05
6.464e-08
d
yr
n .1708349905322978 1.914e-09 deg/d
Q 3.666261675927252 2.7384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      10162 days (27.82 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54033  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:17  

Additional Information
 Earth MOID = 1.76062 au 
 Jupiter MOID = 1.6336 au 
 T_jup = 3.166 
[ 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 14.57   n/a MPO637236  
diameter diameter 6.808 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90914 (1997 HQ11)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1997 HQ11 = 2004 PO89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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