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85834 (1998 XM74)
Classification: Main-belt Asteroid          SPK-ID: 2085834
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1448241428092687 4.6976e-08  
a 2.406747461064577 8.9682e-09 au
q 2.058192323057516 1.1196e-07 au
i 3.145715854726113 4.1209e-06 deg
node 94.90050255013453 8.9755e-05 deg
peri 72.71248400278097 9.0679e-05 deg
M 214.5080446309703 1.418e-05 deg
tp 2459551.663805837287
(2021-Dec-03.16380584)
5.4896e-05 TDB
period 1363.779664642957
3.73
7.6227e-06
2.087e-08
d
yr
n .263972259840265 1.4754e-09 deg/d
Q 2.755302599071638 1.0267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      7628 days (20.88 yr)  
   first obs. used      1998-12-14  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:36  

Additional Information
 Earth MOID = 1.06759 au 
 Jupiter MOID = 2.21709 au 
 T_jup = 3.506 
[ 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 14.9   n/a MPO449533  
diameter diameter 2.965 km 0.319 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.86 h n/a LCDB (Rev. 2019-August); 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.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.167   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85834 (1998 XM74)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1998 XM74 = 2001 QJ108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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