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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1806008742363568 4.0372e-08  
a 3.234073314525893 1.7229e-08 au
q 2.649996846578045 1.3244e-07 au
i .4427293610538939 3.4688e-06 deg
node 267.4041715010665 0.00060047 deg
peri 127.7867791560075 0.00060056 deg
M 271.0016686689825 1.0873e-05 deg
tp 2459525.673231163416
(2021-Nov-07.17323116)
6.601e-05 TDB
period 2124.336045308954
5.82
1.6976e-05
4.648e-08
d
yr
n .1694647138313953 1.3542e-09 deg/d
Q 3.818149782473741 2.0341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1718  
   data-arc span      14082 days (38.55 yr)  
   first obs. used      1981-11-25  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5424  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:00:36  

Additional Information
 Earth MOID = 1.65683 au 
 Jupiter MOID = 1.61701 au 
 T_jup = 3.160 
[ 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 13.2   n/a MPO358724  
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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