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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4226166581190617 6.4255e-08  
a 2.780859039586641 1.6956e-08 au
q 1.605621685576351 1.8144e-07 au
i 27.9611523297623 2.2214e-05 deg
node 298.7107251522199 1.5726e-05 deg
peri 86.06755740659082 3.1429e-05 deg
M 4.178687130965653 1.9243e-05 deg
tp 2457380.839061505625
(2015-Dec-24.33906151)
9.0521e-05 JED
period 1693.818569359938
4.64
1.5492e-05
4.241e-08
d
yr
n .212537521144332 1.9439e-09 deg/d
Q 3.956096393596932 2.4122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      11668 days (31.95 yr)  
   first obs. used      1984-01-05  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .614  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:16:07  

Additional Information
 Earth MOID = .841126 au 
 Jupiter MOID = 2.5468 au 
 T_jup = 3.042 
[ 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 14.4 mag n/a MPO347752  
rotation period rot_per 15.6 h n/a LCDB (Rev. 2015-December); 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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