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 ]  
570 Kythera (1905 QX)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000570
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 .1213291077947207 4.277e-08  
a 3.417411375924187 1.7258e-08 AU
q 3.002779902715776 1.5098e-07 AU
i 1.786936290664315 4.9193e-06 deg
node 223.9032251538962 0.00014076 deg
peri 155.2390391928875 0.00014211 deg
M 32.55002991293721 1.7941e-05 deg
tp 2456791.862096870120
(2014-May-14.36209687)
0.00011444 JED
period 2307.51385874776
6.32
1.748e-05
4.786e-08
d
yr
n .1560120640815413 1.1818e-09 deg/d
Q 3.832042849132598 1.9352e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1613  
   data-arc span      39589 days (108.39 yr)  
   first obs. used      1905-07-31  
   last obs. used      2013-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60807  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:12:30  

Additional Information
 Earth MOID = 2.00502 AU 
 T_jup = 3.131 
[ 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 8.81 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 102.81 km 2.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 8.120 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0500   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV .775 mag .027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=.23, mean=8.39, max.=15.80) deg.
U-B UB .374 mag .071 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=.23, mean=8.39, max.=15.80) deg.
Tholen spectral type spec_T ST   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B T   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

570 Kythera (1905 QX)          Discovered 1905-Jul-30 by Wolf, M. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1905 QX = 1952 BE = 1994 PG40 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-02 21:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin