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375812 (2009 UA2)
Classification: Main-belt Asteroid          SPK-ID: 2375812
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1637027604054513 1.6325e-07  
a 2.576501656872064 3.8014e-08 au
q 2.154721223452889 4.3954e-07 au
i 28.12075649159842 1.5847e-05 deg
node 218.4706292146192 1.5076e-05 deg
peri 129.1728661398364 4.7956e-05 deg
M 241.3722097674506 3.6253e-05 deg
tp 2459498.269182927625
(2021-Oct-10.76918293)
0.00014949 TDB
period 1510.581167386329
4.14
3.3431e-05
9.153e-08
d
yr
n .2383188720821187 5.2742e-09 deg/d
Q 2.99828209029124 4.4237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      5785 days (15.84 yr)  
   first obs. used      2004-06-18  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:14:13  

Additional Information
 Earth MOID = 1.22344 au 
 Jupiter MOID = 2.62028 au 
 T_jup = 3.244 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162706861462385 1.6341e-07  
q 2.158364011627934 4.3991e-07 au
tp 2457987.883130951564
(2017-Aug-22.38313095)
0.00016097 TDB
node 218.4832353637226 1.5077e-05 deg
peri 129.2241172213104 4.8176e-05 deg
i 28.11283569813909 1.5844e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      5785 days (15.84 yr)  
   first obs. used      2004-06-18  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:14:13  

Additional Information
 Jupiter MOID = 2.62028 au 
 T_jup = 3.244 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.670143065673056E-14 -7.175670870232135E-14 2.215717721986738E-11 1.194011439008708E-13 6.463307684564875E-12 -7.089913700443207E-13
q -7.175670870232135E-14 1.935247688784217E-13 -5.915429737360691E-11 -3.18519362798222E-13 -1.735280957169323E-11 1.908022754443763E-12
tp 2.215717721986738E-11 -5.915429737360691E-11 2.591052037221668E-8 1.116946783534509E-10 7.378620198371075E-9 -6.140537189805876E-10
node 1.194011439008708E-13 -3.18519362798222E-13 1.116946783534509E-10 2.273167650517416E-10 -1.681012250991766E-10 -1.306180024758445E-10
peri 6.463307684564875E-12 -1.735280957169323E-11 7.378620198371075E-9 -1.681012250991766E-10 2.320954889405933E-9 -6.493793295579412E-11
i -7.089913700443207E-13 1.908022754443763E-12 -6.140537189805876E-10 -1.306180024758445E-10 -6.493793295579412E-11 2.510416000551113E-10

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 16.6   n/a MPO434327  
diameter diameter 4.051 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

375812 (2009 UA2)          Discovered 2009-Oct-17 by Lowe, A. at Mayhill
Reference: Last Updated: 2013-10-21

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