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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3232320799841688 5.3072e-08  
a 2.998275496331289 1.6786e-08 au
q 2.02913667128656 1.6307e-07 au
i 15.14513103855829 6.5105e-06 deg
node 262.6179190416403 2.0237e-05 deg
peri 101.1176751589384 2.191e-05 deg
M 340.9703726604851 8.757e-06 deg
tp 2457700.738258503120
(2016-Nov-08.23825850)
4.6441e-05 JED
period 1896.294258279641
5.19
1.5925e-05
4.36e-08
d
yr
n .1898439540320075 1.5943e-09 deg/d
Q 3.967414321376018 2.2212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      36057 days (98.72 yr)  
   first obs. used      1917-07-22  
   last obs. used      2016-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49604  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:30:41  

Additional Information
 Earth MOID = 1.09037 au 
 Jupiter MOID = 1.95664 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. 2016-February); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Apr-28 21:51 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin