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48835 (1997 YK18)
Classification: Main-belt Asteroid          SPK-ID: 2048835
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08732061862116625 5.7106e-08  
a 2.996914643220869 3.4968e-08 au
q 2.735222202619991 1.5803e-07 au
i 10.71219504775453 6.9907e-06 deg
node 146.3567858946724 3.0698e-05 deg
peri 287.1559147712252 5.4775e-05 deg
M 238.8990335270258 4.9002e-05 deg
tp 2458237.963166729819
(2018-Apr-29.46316673)
0.00026277 JED
period 1895.00337368446
5.19
3.3166e-05
9.08e-08
d
yr
n .1899732765647013 3.3249e-09 deg/d
Q 3.258607083821748 3.8021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      853  
   data-arc span      6401 days (17.52 yr)  
   first obs. used      1997-12-22  
   last obs. used      2015-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54212  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 14:57:15  

Additional Information
 Earth MOID = 1.77275 au 
 Jupiter MOID = 1.97423 au 
 T_jup = 3.222 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO299292  
rotation period rot_per 32.0 h n/a LCDB (Rev. 2016-February); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

48835 (1997 YK18)          Discovered 1997-Dec-22 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 YK18 = 1999 GJ44 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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