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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128136699385014 3.1123e-08  
a 2.219659146015597 5.4659e-09 au
q 1.935239349285399 6.9179e-08 au
i 1.709671674615224 3.8967e-06 deg
node 40.97569139484713 0.00011101 deg
peri 18.30189666461429 0.00011214 deg
M 332.6839845394463 1.7951e-05 deg
tp 2459092.152160929949
(2020-Aug-30.65216093)
6.0395e-05 TDB
period 1207.891318645231
3.31
4.4616e-06
1.222e-08
d
yr
n .298040059103807 1.1009e-09 deg/d
Q 2.504078942745794 6.1662e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2497  
   data-arc span      41234 days (112.89 yr)  
   first obs. used      1907-09-11  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43084  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:19:35  

Additional Information
 Earth MOID = .947674 au 
 Jupiter MOID = 2.78301 au 
 T_jup = 3.639 
[ 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 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1939-Dec-02 14:33 00:02 Thisb 0.0376698938650914 0.0376691404464854 0.0376706473503234 3.23377228642451 3.23377223045249 2429600.106465816 1.58816097724275 98.0970480708232 18.4500170629087 70.1670566822948 287733.374305923 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:19:45 2020-Aug-24 22:19
2068-Nov-10 15:27 00:01 Thisb 0.0276560353936198 0.0276554513829326 0.02765661945288 3.37192801741768 3.37192794430266 2476696.143407087 1.30975157201662 100.187083781225 23.2271410487622 -79.6334504024186 175232.319325086 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:19:45 2020-Aug-24 22:19
2197-Oct-18 05:11 00:03 Thisb 0.0470268924705177 0.0470219093132482 0.047031875907221 3.68808801300673 3.68808797369454 2523788.715996878 2.62842575297246 307.809231910834 27.8011243019901 -36.3797228464155 151115.538687902 T 38 CATAB v2.0f-lin.ifort 2020-Aug-24 22:19:45 2020-Aug-24 22:19

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