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39304 (2001 QX77)
Classification: Main-belt Asteroid          SPK-ID: 2039304
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05284514312479855 2.6581e-08  
a 2.206762271346725 7.5067e-09 au
q 2.090145603275002 5.8221e-08 au
i 6.853280947652867 5.3712e-06 deg
node 31.01731708069023 2.6549e-05 deg
peri 78.3202316187586 6.3436e-05 deg
M 68.85865939370831 5.708e-05 deg
tp 2458371.472403890512
(2018-Sep-09.97240389)
0.00018957 TDB
period 1197.379317654117
3.28
6.1096e-06
1.673e-08
d
yr
n .3006566045464233 1.5341e-09 deg/d
Q 2.323378939418448 7.9034e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1853  
   data-arc span      16400 days (44.90 yr)  
   first obs. used      1974-06-17  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46685  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:08:17  

Additional Information
 Earth MOID = 1.11966 au 
 Jupiter MOID = 2.72066 au 
 T_jup = 3.649 
[ 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 14.6   n/a MPO365713  
diameter diameter 3.494 km 0.319 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.28 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.525   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39304 (2001 QX77)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 QX77 = 1993 GP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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