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JPL Small-Body Database Browser
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185745 (1999 HM11)
Classification: Main-belt Asteroid          SPK-ID: 2185745
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2677003877564204 6.648e-08  
a 2.742138829665001 2.3681e-08 au
q 2.008067201681744 1.8845e-07 au
i 16.32394951909252 1.51e-05 deg
node 21.16290985304758 3.0299e-05 deg
peri 224.1711988884744 4.8888e-05 deg
M 210.2391553872954 3.712e-05 deg
tp 2459690.467071557921
(2022-Apr-20.96707156)
0.00017687 TDB
period 1658.56533730967
4.54
2.1485e-05
5.882e-08
d
yr
n .2170550607213038 2.8117e-09 deg/d
Q 3.476210457648259 3.0021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      7516 days (20.58 yr)  
   first obs. used      1999-04-07  
   last obs. used      2019-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66143  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 15:08:20  

Additional Information
 Earth MOID = 1.02854 au 
 Jupiter MOID = 1.67973 au 
 T_jup = 3.240 
[ 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 16.4   n/a MPO268162  

185745 (1999 HM11)          Discovered 1999-Apr-16 by CSS at Catalina
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1999 HM11 = 2004 PW100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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