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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3232196067906222 5.345e-08  
a 2.996834460381962 1.6828e-08 AU
q 2.028198804480718 1.6403e-07 AU
i 15.14781206876995 6.5473e-06 deg
node 262.6185435261041 2.0436e-05 deg
peri 101.1960612510224 2.2109e-05 deg
M 226.931555713714 8.4945e-06 deg
tp 2457700.930641261960
(2016-Nov-08.43064126)
4.661e-05 JED
period 1894.927322602604
5.19
1.5961e-05
4.37e-08
d
yr
n .1899809009590695 1.6002e-09 deg/d
Q 3.965470116283206 2.2267e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      35766 days (97.92 yr)  
   first obs. used      1917-07-22  
   last obs. used      2015-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49573  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:36:48  

Additional Information
 Earth MOID = 1.09052 AU 
 T_jup = 3.123 
[ 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-July); 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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