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85978 (1999 GD45)
Classification: Main-belt Asteroid          SPK-ID: 2085978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1474447111234974 3.7912e-08  
a 2.780880646293691 1.5857e-08 au
q 2.370854502731993 1.0674e-07 au
i 8.01938881213141 4.6026e-06 deg
node 137.1083911920283 2.7797e-05 deg
peri 28.80164298336967 3.1202e-05 deg
M 225.7369772723594 1.5488e-05 deg
tp 2459632.221809881839
(2022-Feb-21.72180988)
7.5321e-05 TDB
period 1693.838310335042
4.64
1.4488e-05
3.967e-08
d
yr
n .2125350441086622 1.8178e-09 deg/d
Q 3.190906789855389 1.8195e-08 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      7804 days (21.37 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52718  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:57:55  

Additional Information
 Earth MOID = 1.38233 au 
 Jupiter MOID = 1.79637 au 
 T_jup = 3.303 
[ show covariance matrix ]

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 14.8   n/a MPO348043  
diameter diameter 5.216 km 1.564 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85978 (1999 GD45)          Discovered 1999-Apr-12 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 GD45 = 2001 UZ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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