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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07785357226482412 3.2676e-08  
a 1.85966535180384 5.1231e-09 au
q 1.71488376094879 6.2304e-08 au
i 23.09524123275554 4.3412e-06 deg
node 197.5267085675719 8.5224e-06 deg
peri 72.1627363280079 3.1239e-05 deg
M 312.3974485133299 3.2127e-05 deg
tp 2459322.983716887415
(2021-Apr-18.48371689)
8.2914e-05 TDB
period 926.297786617946
2.54
3.8278e-06
1.048e-08
d
yr
n .3886439168924442 1.606e-09 deg/d
Q 2.004446942658889 5.522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1191  
   data-arc span      14895 days (40.78 yr)  
   first obs. used      1980-04-08  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50901  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:07:43  

Additional Information
 Earth MOID = .777526 au 
 Jupiter MOID = 3.04441 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 15.73   n/a E2021B10  
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. 2020-October); 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 ]
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