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9669 Symmetria (1997 NC3)
Classification: Outer Main-belt Asteroid          SPK-ID: 2009669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1786255517140195 3.9397e-08  
a 3.227151878109888 1.6903e-08 au
q 2.650700093417575 1.2849e-07 au
i .4409252168499397 3.4164e-06 deg
node 267.1495914108112 0.00059202 deg
peri 128.4452381831776 0.00059211 deg
M 337.6603321152329 1.1123e-05 deg
tp 2459527.901930519397
(2021-Nov-09.40193052)
6.5816e-05 TDB
period 2117.520064800918
5.80
1.6636e-05
4.555e-08
d
yr
n .1700101954093389 1.3357e-09 deg/d
Q 3.803603662802201 1.9922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1858  
   data-arc span      14502 days (39.70 yr)  
   first obs. used      1981-11-25  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:02:19  

Additional Information
 Earth MOID = 1.65699 au 
 Jupiter MOID = 1.63224 au 
 T_jup = 3.162 
[ 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 13.19   n/a MPO636212  
diameter diameter 11.371 km 3.674 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.072   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

9669 Symmetria           Discovered 1997 July 8 by P. G. Comba at Prescott.
Name suggested by the palindromic shape of the numeral 9669, and the fact that each pair of its digits is invariant under a rotation by 180 degrees.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1997 NC3 = 1981 WF8 = 1986 RD9 = 1995 FJ21 = 1996 LY5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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