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31180 (1997 YX3)
Classification: Mars-crossing Asteroid          SPK-ID: 2031180
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4227468481310148 7.7157e-08  
a 2.780852359601393 2.9414e-08 AU
q 1.605255789462209 2.1051e-07 AU
i 27.962832695513 2.7321e-05 deg
node 298.7117203967787 1.8636e-05 deg
peri 86.08642270987394 3.4828e-05 deg
M 279.1624345612541 2.6513e-05 deg
tp 2457380.843544660518
(2015-Dec-24.34354466)
0.00012817 JED
period 1693.812466204707
4.64
2.6874e-05
7.358e-08
d
yr
n .2125382869608021 3.3721e-09 deg/d
Q 3.956448929740577 4.1848e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      11464 days (31.39 yr)  
   first obs. used      1984-01-05  
   last obs. used      2015-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6696  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 17:04:00  

Additional Information
 Earth MOID = .842269 AU 
 T_jup = 3.041 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO263608  
rotation period rot_per 15.6 h n/a LCDB (Rev. 2015-May); 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:
[Warner, B.D. (2007) Minor Planet Bul. 34, 32-37.]

31180 (1997 YX3)          Discovered 1997-Dec-22 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 YX3 = 1984 AD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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