Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
9084 Achristou (1995 CS1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2009084
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07789700452156119 3.2779e-08  
a 1.859699717879657 5.3104e-09 au
q 1.714834680547239 6.2538e-08 au
i 23.09556700946804 5.2213e-06 deg
node 197.536478983661 8.608e-06 deg
peri 71.95148390349122 3.4524e-05 deg
M 79.44897413831353 3.4111e-05 deg
tp 2458396.068197555395
(2018-Oct-04.56819756)
8.7491e-05 TDB
period 926.3234633078406
2.54
3.9677e-06
1.086e-08
d
yr
n .3886331441011582 1.6646e-09 deg/d
Q 2.004564755212074 5.7241e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1059  
   data-arc span      14487 days (39.66 yr)  
   first obs. used      1980-04-08  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51617  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:48:46  

Additional Information
 Earth MOID = .778262 au 
 Jupiter MOID = 3.04585 au 
 T_jup = 3.894 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO452298  
diameter diameter 1.916 km 0.367 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.84 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D.; Coley, D.; Warner, B.D. (2014) Minor Planet Bull. 41, 8-13.]
geometric albedo albedo 0.333   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9084 Achristou           Discovered 1995 Feb. 3 by D. J. Asher at Siding Spring.
Apostolos Christou (b. 1968), research astronomer at Armagh Observatory, is a gifted dynamicist, programmer and observer. His interests include minor planets co-orbital with Venus, the earth and (1) Ceres; meteors on Venus, the earth and Mars; NEA mission design; and the irregular satellite families of the outer planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1995 CS1 = 1980 GV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 02:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin