Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .323219586532968 5.8078e-08  
a 2.996834456280185 1.7539e-08 AU
q 2.028198862413552 1.7636e-07 AU
i 15.14781346520412 6.8329e-06 deg
node 262.6185537284675 2.2431e-05 deg
peri 101.1960558837528 2.4498e-05 deg
M 226.9315550654845 8.5605e-06 deg
tp 2457700.930643236015
(2016-Nov-08.43064324)
4.6776e-05 JED
period 1894.927318712215
5.19
1.6635e-05
4.554e-08
d
yr
n .1899809013491106 1.6678e-09 deg/d
Q 3.965470050146819 2.3208e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      994  
   data-arc span      35322 days (96.71 yr)  
   first obs. used      1917-07-22  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49696  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:48:27  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-24 18:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin