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216690 (2004 HM11)
Classification: Main-belt Asteroid          SPK-ID: 2216690
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2009959848714239 3.5839e-08  
a 2.798061579637378 1.5225e-08 au
q 2.235662436707271 1.0089e-07 au
i 7.441303811428989 6.3312e-06 deg
node 187.2099818397209 3.1344e-05 deg
peri 98.62407191868017 3.5102e-05 deg
M 148.0308649879293 1.538e-05 deg
tp 2458497.534347958583
(2019-Jan-14.03434796)
7.1811e-05 TDB
period 1709.559926948652
4.68
1.3953e-05
3.82e-08
d
yr
n .2105805092440102 1.7187e-09 deg/d
Q 3.360460722567484 1.8285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      10306 days (28.22 yr)  
   first obs. used      1991-10-06  
   last obs. used      2019-12-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:53  

Additional Information
 Earth MOID = 1.23259 au 
 Jupiter MOID = 1.87605 au 
 T_jup = 3.284 
[ 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 16.1   n/a MPO494193  
diameter diameter 3.814 km 0.868 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216690 (2004 HM11)          Discovered 2004-Apr-19 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 2004 HM11 = 1999 FV69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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