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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4228842759938773 8.1579e-08  
a 2.78047774228951 3.043e-08 AU
q 1.60465742532432 2.2223e-07 AU
i 27.96253225451077 2.447e-05 deg
node 298.7130750959835 2.0226e-05 deg
peri 86.10188437017112 3.3233e-05 deg
M 236.6394222026318 2.2772e-05 deg
tp 2457380.798509821986
(2015-Dec-24.29850982)
0.00011283 JED
period 1693.470209575913
4.64
2.7801e-05
7.611e-08
d
yr
n .2125812417392053 3.4898e-09 deg/d
Q 3.956298059254701 4.3299e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      344  
   data-arc span      10714 days (29.33 yr)  
   first obs. used      1984-01-05  
   last obs. used      2013-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .66931  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-20 08:36:52  

Additional Information
 Earth MOID = .840744 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 14.2 mag n/a MPO263608  
rotation period rot_per 15.6 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (327)
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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