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880 Herba (1917 CK)
Classification: Main-belt Asteroid          SPK-ID: 2000880
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3231712316086693 5.3309e-08  
a 2.997745340467604 1.6796e-08 au
q 2.028960286739538 1.6371e-07 au
i 15.14628261161637 6.5444e-06 deg
node 262.6207171250921 2.0332e-05 deg
peri 101.138993884188 2.2013e-05 deg
M 302.9747415809791 8.6862e-06 deg
tp 2457700.799972925039
(2016-Nov-08.29997292)
4.664e-05 JED
period 1895.791325637457
5.19
1.5933e-05
4.362e-08
d
yr
n .1898943175504565 1.5959e-09 deg/d
Q 3.966530394195669 2.2224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1143  
   data-arc span      35817 days (98.06 yr)  
   first obs. used      1917-07-22  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49256  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 13:58:37  

Additional Information
 Earth MOID = 1.08966 au 
 Jupiter MOID = 1.95786 au 
 T_jup = 3.122 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.46 mag n/a PDS3 (MPC 17260)  
rotation period rot_per 12.266 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bul. 34, 32-37.]
[Pilcher, F. (2012) Minor Planet Bul. 39, 57-60.]
B-V BV .634 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=15.00 deg.
U-B UB .301 mag .037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=15.00 deg.
Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

880 Herba (1917 CK)          Discovered 1917-Jul-22 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1917 CK = 1954 YC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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