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48471 Orchiston (1991 TV2)
Classification: Main-belt Asteroid          SPK-ID: 2048471
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784827177074587 5.304e-08  
a 2.42216305918208 1.3325e-08 au
q 1.989848813648651 1.3129e-07 au
i 8.203401391584169 6.0956e-06 deg
node 355.9789297539925 3.0849e-05 deg
peri 337.9619282567711 3.4487e-05 deg
M 243.1319425304152 1.9639e-05 deg
tp 2459447.488979829129
(2021-Aug-20.98897983)
7.778e-05 TDB
period 1376.903460386216
3.77
1.1362e-05
3.111e-08
d
yr
n .2614562388411904 2.1575e-09 deg/d
Q 2.85447730471551 1.5703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      10449 days (28.61 yr)  
   first obs. used      1991-09-16  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56619  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:45:49  

Additional Information
 Earth MOID = .983018 au 
 Jupiter MOID = 2.52977 au 
 T_jup = 3.477 
[ 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 15.4   n/a MPO432042  
diameter diameter 1.953 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.292   0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48471 Orchiston           Discovered 1991 Oct. 7 by L. D. Schmadel and F. Borngen at Tautenburg.
New Zealander Wayne Orchistron (b. 1943) works as an astronomer at the National Astronomical Research Institute of Thailand. His main interests lie in the field of history of astronomy. He is the author of many books and the co-founder and editor of the Journal of Astronomical History and Heritage.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-11-17Last Updated: 2014-11-10

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Alternate Designations
 1991 TV2 = 1999 XT199 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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