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JPL Small-Body Database Browser
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183635 Helmi (2003 UF413)
Classification: Main-belt Asteroid          SPK-ID: 2183635
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .199641082465545 4.0237e-08  
a 2.350311734751899 1.4914e-08 au
q 1.881092955894557 9.116e-08 au
i 3.639649848005459 4.6678e-06 deg
node 95.71551893386092 7.2034e-05 deg
peri 163.2096920623187 7.2923e-05 deg
M 209.6041431496774 1.2711e-05 deg
tp 2459150.319326977677
(2020-Oct-27.81932698)
4.8525e-05 TDB
period 1316.093154806473
3.60
1.2527e-05
3.43e-08
d
yr
n .2735368683328018 2.6036e-09 deg/d
Q 2.819530513609241 1.7891e-08 au
  Orbit Determination Parameters
   # obs. used (total)      416  
   data-arc span      8645 days (23.67 yr)  
   first obs. used      1995-05-09  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65898  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:57:54  

Additional Information
 Earth MOID = .865837 au 
 Jupiter MOID = 2.24457 au 
 T_jup = 3.528 
[ 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 MPO422715  

183635 Helmi           Discovered 2003 Oct. 24 by the Sloan Digital Sky Survey at Apache Point.
Amina Helmi (b. 1970), is an Argentinian-Dutch astronomer and a contributor to the Sloan Digital Sky Survey. She is best known for the discovery of stellar streams in the nearby Galactic halo and for her dynamical modeling work of the Galaxy and nearby satellites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-09-19Last Updated: 2013-09-23

[ show close-approach data ]
Alternate Designations
 2003 UF413 = 2002 CL221 = 2003 UO414 = 2007 VN141 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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