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49923 (1999 XQ174)
Classification: Main-belt Asteroid          SPK-ID: 2049923
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 .09178048828418311 4.0986e-08  
a 2.588962454787573 1.385e-08 au
q 2.351346216537753 1.0208e-07 au
i 15.15471948585304 4.341e-06 deg
node 93.37556527149982 1.608e-05 deg
peri 192.7577078879755 3.0816e-05 deg
M 152.131849528824 2.8382e-05 deg
tp 2458357.509287698209
(2018-Aug-27.00928770)
0.00011797 TDB
period 1521.552897342429
4.17
1.221e-05
3.343e-08
d
yr
n .2366003841396394 1.8986e-09 deg/d
Q 2.826578693037394 1.5121e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1571  
   data-arc span      8552 days (23.41 yr)  
   first obs. used      1997-06-01  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46365  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:07  

Additional Information
 Earth MOID = 1.33674 au 
 Jupiter MOID = 2.30818 au 
 T_jup = 3.366 
[ 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 MPO359076  
diameter diameter 5.307 km 0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.21 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:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.329   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49923 (1999 XQ174)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XQ174 = 2001 FK127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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