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175668 (1994 AZ9)
Classification: Main-belt Asteroid          SPK-ID: 2175668
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01897630613055658 4.7688e-08  
a 2.855119570893379 2.2253e-08 au
q 2.800939947876762 1.3076e-07 au
i 2.671511307234484 5.277e-06 deg
node 47.45293747741778 0.00012487 deg
peri 188.6913945526236 0.00021763 deg
M 98.91194591742956 0.00017592 deg
tp 2458716.348676385471
(2019-Aug-20.84867639)
0.00086281 TDB
period 1762.117557031275
4.82
2.0601e-05
5.64e-08
d
yr
n .2042996499090047 2.3885e-09 deg/d
Q 2.909299193909995 2.2676e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      9744 days (26.68 yr)  
   first obs. used      1994-01-08  
   last obs. used      2020-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:57:12  

Additional Information
 Earth MOID = 1.78709 au 
 Jupiter MOID = 2.05682 au 
 T_jup = 3.302 
[ 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 15.97   n/a E2021B55  
rotation period rot_per 3.68 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:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

175668 (1994 AZ9)          Discovered 1994-Jan-08 by Spacewatch at Kitt Peak
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

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Alternate Designations
 1994 AZ9 = 1999 FW19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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