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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3138144593455817 4.5629e-08  
a 2.364720092365411 9.4276e-09 au
q 1.622636735076126 1.0732e-07 au
i 20.67851436598708 4.6923e-06 deg
node 274.9537386490018 1.3799e-05 deg
peri 89.48567420835684 1.5315e-05 deg
M 10.94458288262304 7.2712e-06 deg
tp 2458960.120145215053
(2020-Apr-20.62014522)
2.6708e-05 TDB
period 1328.213955568936
3.64
7.9429e-06
2.175e-08
d
yr
n .2710406696832176 1.6209e-09 deg/d
Q 3.106803449654697 1.2386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1415  
   data-arc span      25174 days (68.92 yr)  
   first obs. used      1951-11-29  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40951  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:55  

Additional Information
 Earth MOID = .769913 au 
 Jupiter MOID = 2.78213 au 
 T_jup = 3.398 
[ 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-August); 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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