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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3232195868765224 5.7819e-08  
a 2.996834456360582 1.7481e-08 AU
q 2.028198861438387 1.7568e-07 AU
i 15.14781343498938 6.7966e-06 deg
node 262.6185537835536 2.2373e-05 deg
peri 101.1960557744041 2.4391e-05 deg
M 226.9315550645975 8.5506e-06 deg
tp 2457700.930643268870
(2016-Nov-08.43064327)
4.6745e-05 JED
period 1894.927318788468
5.19
1.658e-05
4.539e-08
d
yr
n .1899809013414656 1.6623e-09 deg/d
Q 3.965470051282777 2.3131e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1004  
   data-arc span      35614 days (97.51 yr)  
   first obs. used      1917-07-22  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4946  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:55:57  

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-Feb); 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 (024)
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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