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100935 (1998 MA42)
Classification: Mars-crossing Asteroid          SPK-ID: 2100935
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3158557838227182 4.4181e-08  
a 2.285972740304559 7.3221e-09 au
q 1.563935028618295 9.8476e-08 au
i 4.407633616055816 2.9099e-06 deg
node 282.1776021165575 5.5598e-05 deg
peri 60.70574006138447 5.5803e-05 deg
M 140.0077131264293 4.7911e-06 deg
tp 2458709.530562001315
(2019-Aug-14.03056200)
1.5901e-05 TDB
period 1262.423288922084
3.46
6.0654e-06
1.661e-08
d
yr
n .2851658418844482 1.3701e-09 deg/d
Q 3.008010451990822 9.6349e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1186  
   data-arc span      17005 days (46.56 yr)  
   first obs. used      1974-08-21  
   last obs. used      2021-03-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:26  

Additional Information
 Earth MOID = .560225 au 
 Jupiter MOID = 2.42898 au 
 T_jup = 3.530 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.45   n/a E2021B55  
rotation period rot_per 411. h n/a LCDB (Rev. 2020-October); 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:
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 125-133.]

100935 (1998 MA42)          Discovered 1998-Jun-26 by Broughton, J. at Reedy Creek
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 MA42 = 1974 QA1 = 2002 TO293 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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