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74548 (1999 JM64)
Classification: Main-belt Asteroid          SPK-ID: 2074548
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3288775227067173 5.243e-08  
a 3.127130293460107 2.2426e-08 au
q 2.098687429365817 1.7265e-07 au
i 21.10570430012114 6.6217e-06 deg
node 239.1998918739374 1.3342e-05 deg
peri 259.4953562604177 1.7409e-05 deg
M 354.9679032107115 9.248e-06 deg
tp 2459028.733445245992
(2020-Jun-28.23344525)
5.1999e-05 TDB
period 2019.841969294576
5.53
2.1728e-05
5.949e-08
d
yr
n .178231765391888 1.9173e-09 deg/d
Q 4.155573157554397 2.9802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      807  
   data-arc span      8121 days (22.23 yr)  
   first obs. used      1997-11-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49002  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:40  

Additional Information
 Earth MOID = 1.22494 au 
 Jupiter MOID = 1.7881 au 
 T_jup = 3.030 
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Orbital Elements at Epoch 2457322.5 (2015-Oct-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3299819922038047 5.2458e-08  
q 2.093199972201005 1.7266e-07 au
tp 2457010.980935486070
(2014-Dec-19.48093549)
4.8037e-05 TDB
node 239.2207052185171 1.3345e-05 deg
peri 259.5515641213827 1.7377e-05 deg
i 21.11297070641319 6.6238e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      807  
   data-arc span      8121 days (22.23 yr)  
   first obs. used      1997-11-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49002  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:40  

Additional Information
 Jupiter MOID = 1.7881 au 
 T_jup = 3.030 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.751862479951842E-15 -9.033477131940097E-15 1.083020460125482E-13 -6.61636511977772E-16 1.517786353683236E-13 -1.401172366122167E-14
q -9.033477131940097E-15 2.980998906390458E-14 -3.770232261358723E-13 1.377843221944399E-15 -4.912534471461223E-13 4.808918563356358E-14
tp 1.083020460125482E-13 -3.770232261358723E-13 2.307550807495556E-9 -3.497526349798377E-12 5.389020810790859E-10 -4.587748187714618E-12
node -6.61636511977772E-16 1.377843221944399E-15 -3.497526349798377E-12 1.780991380179682E-10 -1.662077013081117E-10 -2.561463331946563E-12
peri 1.517786353683236E-13 -4.912534471461223E-13 5.389020810790859E-10 -1.662077013081117E-10 3.019706283208085E-10 9.85716560161721E-13
i -1.401172366122167E-14 4.808918563356358E-14 -4.587748187714618E-12 -2.561463331946563E-12 9.85716560161721E-13 4.387413871598464E-11

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 13.7   n/a MPO280227  
diameter diameter 9.538 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74548 (1999 JM64)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 JM64 = 2001 QO174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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