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49385 (1998 XA12)
Classification: Mars-crossing Asteroid          SPK-ID: 2049385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3143336248970549 4.9247e-08  
a 2.365435807559375 9.7914e-09 au
q 1.621899795707944 1.1679e-07 au
i 20.67513916561688 4.7034e-06 deg
node 274.9585754654259 1.5026e-05 deg
peri 89.47267744113664 1.6312e-05 deg
M 262.6089732058527 6.9752e-06 deg
tp 2458959.985701398079
(2020-Apr-20.48570140)
2.6753e-05 TDB
period 1328.817004638928
3.64
8.2507e-06
2.259e-08
d
yr
n .2709176649179175 1.6821e-09 deg/d
Q 3.108971819410805 1.2869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1177  
   data-arc span      24744 days (67.75 yr)  
   first obs. used      1951-11-29  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43271  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:16:28  

Additional Information
 Earth MOID = .768574 au 
 Jupiter MOID = 2.77757 au 
 T_jup = 3.397 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO436129  
rotation period rot_per 2.5231 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2006) Minor Planet Bull. 33, 35-39.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2017) Minor Planet Bull. 44, 116-120.]

49385 (1998 XA12)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XA12 = 1975 GQ1 = 2001 MN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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