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JPL Small-Body Database Browser
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45130 (1999 XQ91)
Classification: Main-belt Asteroid          SPK-ID: 2045130
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2038464707396039 3.6764e-08  
a 2.483161165427215 8.3213e-09 au
q 1.976977525577235 8.9082e-08 au
i 2.542914807964028 3.2298e-06 deg
node 138.9432543931954 7.8142e-05 deg
peri 197.2636681812963 7.8628e-05 deg
M 193.6477972306638 1.1742e-05 deg
tp 2459660.937680619196
(2022-Mar-22.43768062)
4.8969e-05 TDB
period 1429.242060308543
3.91
7.1843e-06
1.967e-08
d
yr
n .2518817560702654 1.2661e-09 deg/d
Q 2.989344805277194 1.0018e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2451  
   data-arc span      9899 days (27.10 yr)  
   first obs. used      1993-03-20  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47951  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:24:29  

Additional Information
 Earth MOID = .967557 au 
 Jupiter MOID = 2.39219 au 
 T_jup = 3.447 
[ 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 14.0   n/a MPO365780  
diameter diameter 4.888 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.324 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.223   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

45130 (1999 XQ91)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XQ91 = 1998 QB10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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