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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3287528308119858 5.2365e-08  
a 3.126497868890571 2.2235e-08 au
q 2.098652843965155 1.7249e-07 au
i 21.10601575799879 6.451e-06 deg
node 239.1952987666864 1.3088e-05 deg
peri 259.483666646169 1.7216e-05 deg
M 30.63164784428296 9.1471e-06 deg
tp 2459028.688000483039
(2020-Jun-28.18800048)
5.0638e-05 TDB
period 2019.229267081367
5.53
2.1541e-05
5.898e-08
d
yr
n .1782858469164083 1.9019e-09 deg/d
Q 4.154342893815986 2.9545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      8193 days (22.43 yr)  
   first obs. used      1997-11-07  
   last obs. used      2020-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48705  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:43:14  

Additional Information
 Earth MOID = 1.22484 au 
 Jupiter MOID = 1.78882 au 
 T_jup = 3.030 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457439.5 (2016-Feb-21.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3299352235922673 5.2406e-08  
q 2.093417113998172 1.7246e-07 au
tp 2457010.981126020879
(2014-Dec-19.48112602)
4.7273e-05 TDB
node 239.2204944374124 1.3092e-05 deg
peri 259.5607294790606 1.7182e-05 deg
i 21.11219415896839 6.4527e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      8193 days (22.43 yr)  
   first obs. used      1997-11-07  
   last obs. used      2020-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48705  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:43:14  

Additional Information
 Jupiter MOID = 1.78882 au 
 T_jup = 3.030 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.746391053694822E-15 -9.01533613318619E-15 9.990282046807339E-14 2.513673528577689E-15 1.476508991986791E-13 -1.573608987818497E-14
q -9.01533613318619E-15 2.974413470216008E-14 -3.689419993874446E-13 -9.116089985100488E-15 -4.806020598306527E-13 5.394827977977518E-14
tp 9.990282046807339E-14 -3.689419993874446E-13 2.234715882481834E-9 -7.106247061349448E-12 5.297794478146041E-10 -2.309532220071608E-12
node 2.513673528577689E-15 -9.116089985100488E-15 -7.106247061349448E-12 1.713885617031361E-10 -1.60604873020372E-10 1.221725341167089E-12
peri 1.476508991986791E-13 -4.806020598306527E-13 5.297794478146041E-10 -1.60604873020372E-10 2.952352182549803E-10 -2.134049860148918E-12
i -1.573608987818497E-14 5.394827977977518E-14 -2.309532220071608E-12 1.221725341167089E-12 -2.134049860148918E-12 4.163717913066134E-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 13.83   n/a E2021B10  
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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