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JPL Small-Body Database Browser
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926 Imhilde (A920 CB)
Classification: Main-belt Asteroid          SPK-ID: 2000926
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1826242691153312 4.3773e-08  
a 2.98353156214301 1.237e-08 au
q 2.43866629122412 1.3368e-07 au
i 16.33012497550467 4.8891e-06 deg
node 49.00984782758948 1.6309e-05 deg
peri 174.0936659373982 2.0548e-05 deg
M 20.37778092548493 1.4193e-05 deg
tp 2458493.951149217266
(2019-Jan-10.45114922)
7.3913e-05 TDB
period 1882.324008784159
5.15
1.1707e-05
3.205e-08
d
yr
n .1912529396214487 1.1895e-09 deg/d
Q 3.528396833061899 1.4629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2118  
   data-arc span      36346 days (99.51 yr)  
   first obs. used      1920-02-15  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44957  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:13:23  

Additional Information
 Earth MOID = 1.43027 au 
 Jupiter MOID = 1.45719 au 
 T_jup = 3.173 
[ 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 10.5   n/a MPO298961  
diameter diameter 48.48 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
rotation period rot_per 26.8 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2004) Minor Planet Bull. 31, 19-22.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
geometric albedo albedo 0.0570   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22

926 Imhilde (A920 CB)          Discovered 1920-Feb-15 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A920 CB = 1931 GB = 1964 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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