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9991 Anezka (1997 TY7)
Classification: Main-belt Asteroid          SPK-ID: 2009991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577108009024704 3.1835e-08  
a 3.199142571060711 1.833e-08 au
q 2.694603233977538 9.942e-08 au
i 2.177497833952802 3.4217e-06 deg
node 80.5976720639145 9.6293e-05 deg
peri 114.9020956968956 9.6916e-05 deg
M 168.9904907919666 1.2107e-05 deg
tp 2458019.410594552209
(2017-Sep-22.91059455)
6.7385e-05 TDB
period 2090.012191253987
5.72
1.7963e-05
4.918e-08
d
yr
n .1722477990829343 1.4804e-09 deg/d
Q 3.703681908143884 2.1221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1881  
   data-arc span      15632 days (42.80 yr)  
   first obs. used      1977-02-19  
   last obs. used      2019-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52708  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 21:53:25  

Additional Information
 Earth MOID = 1.69434 au 
 Jupiter MOID = 1.25227 au 
 T_jup = 3.174 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456924.5 (2014-Sep-24.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .156556095446746 3.2003e-08  
q 2.700606405159562 1.0003e-07 au
tp 2455930.898724621372
(2012-Jan-04.39872462)
6.5359e-05 TDB
node 80.62135596298734 9.6363e-05 deg
peri 115.6698355094795 9.6988e-05 deg
i 2.17714322556991 3.4177e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1881  
   data-arc span      15632 days (42.80 yr)  
   first obs. used      1977-02-19  
   last obs. used      2019-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52708  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 21:53:25  

Additional Information
 Jupiter MOID = 1.25227 au 
 T_jup = 3.174 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.024207458055621E-15 -3.164213785210338E-15 -1.708575014845827E-13 9.650197722043977E-16 -1.067044797561102E-14 8.847643035098026E-17
q -3.164213785210338E-15 1.000570841833808E-14 5.403354029219589E-13 -3.587928388812424E-15 5.711978063731747E-14 -1.862588799345341E-16
tp -1.708575014845827E-13 5.403354029219589E-13 4.271832829744215E-9 -4.098033492371972E-12 7.331719254205871E-10 2.535646712409714E-13
node 9.650197722043977E-16 -3.587928388812424E-15 -4.098033492371972E-12 9.285771080704983E-9 -9.27965406789701E-9 4.652965141435346E-12
peri -1.067044797561102E-14 5.711978063731747E-14 7.331719254205871E-10 -9.27965406789701E-9 9.406753387497263E-9 -4.596786290634471E-12
i 8.847643035098026E-17 -1.862588799345341E-16 2.535646712409714E-13 4.652965141435346E-12 -4.596786290634471E-12 1.168056083891688E-11

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 13.3   n/a MPO358727  
diameter diameter 12.293 km 0.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.469 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.097   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9991 Anezka (1997 TY7)          Discovered 1997-Oct-05 by Klet at Klet
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 TY7 = 1977 DX9 = 1983 GV1 = 1994 BZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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