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641 Agnes (A907 RH)
Classification: Main-belt Asteroid          SPK-ID: 2000641
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1281366990877357 3.1134e-08  
a 2.219659146421771 5.5143e-09 au
q 1.935239350299384 6.9224e-08 au
i 1.709671632272143 3.8978e-06 deg
node 40.9756896925923 0.00011131 deg
peri 18.3018996138039 0.00011245 deg
M 332.6839828877327 1.8175e-05 deg
tp 2459092.152166497024
(2020-Aug-30.65216650)
6.1151e-05 TDB
period 1207.891318976778
3.31
4.5012e-06
1.232e-08
d
yr
n .2980400590219998 1.1106e-09 deg/d
Q 2.504078942544158 6.2209e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2461  
   data-arc span      40992 days (112.23 yr)  
   first obs. used      1907-09-11  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:33:04  

Additional Information
 Earth MOID = .947674 au 
 Jupiter MOID = 2.78301 au 
 T_jup = 3.639 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456047.5 (2012-Apr-30.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1281037479496796 3.1324e-08  
q 1.935945753347304 6.9689e-08 au
tp 2455465.877250972530
(2010-Sep-26.37725097)
5.5295e-05 TDB
node 41.05993615843705 0.00011104 deg
peri 17.82021898758916 0.00011219 deg
i 1.712304209862786 3.9005e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2461  
   data-arc span      40992 days (112.23 yr)  
   first obs. used      1907-09-11  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:33:04  

Additional Information
 Jupiter MOID = 2.78301 au 
 T_jup = 3.639 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.811778870271977E-16 -2.177612181802287E-15 -4.846056165995092E-13 2.586208514705736E-15 -1.43396325905026E-13 -2.153975968391251E-17
q -2.177612181802287E-15 4.856500604633676E-15 1.160086367019676E-12 -5.880834143272758E-15 3.437397790566864E-13 5.404589340483327E-17
tp -4.846056165995092E-13 1.160086367019676E-12 3.057515364724404E-9 -5.533377337011541E-12 8.91540881104544E-10 4.069026962664827E-13
node 2.586208514705736E-15 -5.880834143272758E-15 -5.533377337011541E-12 1.233085071613221E-8 -1.232665007669976E-8 -1.121344437555181E-10
peri -1.43396325905026E-13 3.437397790566864E-13 8.91540881104544E-10 -1.232665007669976E-8 1.258564788989499E-8 1.121995220361977E-10
i -2.153975968391251E-17 5.404589340483327E-17 4.069026962664827E-13 -1.121344437555181E-10 1.121995220361977E-10 1.521374006552577E-11

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 12.4   n/a MPO435701  
diameter diameter 9.446 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 178.0 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Franco, L.; Martinez, L. (2014) Minor Planet Bull. 41, 71-72.]
geometric albedo albedo 0.217   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

641 Agnes (A907 RH)          Discovered 1907-Sep-08 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A907 RH = 1952 FD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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