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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1447687541234213 3.7256e-08  
a 2.407147732896233 7.6902e-09 au
q 2.058667954613827 9.1222e-08 au
i 3.14565782747794 3.4682e-06 deg
node 94.90187856639865 7.0173e-05 deg
peri 72.64346416469618 7.1298e-05 deg
M 267.3712849934801 1.4271e-05 deg
tp 2459551.490759303909
(2021-Dec-02.99075930)
5.4859e-05 TDB
period 1364.119898894346
3.73
6.537e-06
1.79e-08
d
yr
n .2639064207565545 1.2647e-09 deg/d
Q 2.755627511178639 8.8034e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1706  
   data-arc span      8095 days (22.16 yr)  
   first obs. used      1998-12-14  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49336  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:15:13  

Additional Information
 Earth MOID = 1.06775 au 
 Jupiter MOID = 2.21589 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 14.91   n/a E2021B10  
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. 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:
[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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