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18229 (3222 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2018229
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096587575524828 4.6513e-08  
a 2.127659114905207 7.3766e-09 au
q 1.681576748378966 1.0138e-07 au
i 1.601884071243347 2.991e-06 deg
node 230.8664173836725 0.00015435 deg
peri 82.91259555353642 0.00015451 deg
M 262.59659214065 7.263e-06 deg
tp 2459507.206620258693
(2021-Oct-19.70662026)
2.3331e-05 TDB
period 1133.578236323797
3.10
5.8952e-06
1.614e-08
d
yr
n .3175784330223934 1.6516e-09 deg/d
Q 2.573741481431448 8.9232e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1886  
   data-arc span      18221 days (49.89 yr)  
   first obs. used      1971-03-25  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52904  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:25:26  

Additional Information
 Earth MOID = .666607 au 
 Jupiter MOID = 2.70602 au 
 T_jup = 3.696 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.07   n/a E2021B10  
diameter diameter 2.546 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.189   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18229 (3222 T-1)          Discovered 1971-Mar-26 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 3222 T-1 = 1996 GQ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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