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227065 Romandia (2005 GQ9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2227065
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0977791637984995 4.9343e-08  
a 3.952129131066224 6.6309e-08 au
q 3.565693249406878 2.1379e-07 au
i 4.269081241250201 5.323e-06 deg
node 61.28841897635101 8.9925e-05 deg
peri 178.4359403264032 9.6822e-05 deg
M 308.7185565874817 3.7923e-05 deg
tp 2459609.292440504478
(2022-Jan-29.79244050)
0.000307 TDB
period 2869.756948878854
7.86
7.2223e-05
1.977e-07
d
yr
n .1254461637040877 3.1571e-09 deg/d
Q 4.33856501272557 7.2792e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      7467 days (20.44 yr)  
   first obs. used      2000-09-26  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56635  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:18  

Additional Information
 Earth MOID = 2.55192 au 
 Jupiter MOID = .666037 au 
 T_jup = 3.046 
[ 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 14.47   n/a E2021B55  
diameter diameter 9.476 km 0.929 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.034   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

227065 Romandia           Discovered 2005 Apr. 1 by M. Ory at Vicques.
Romandia is the Latin name of the French-speaking part of Switzerland. Romandia extends between the cities of Geneva and Porrentruy. This minor planet is the second Hilda member to be discovered at the Jura Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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