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52768 (1998 OR2)
Classification: Amor [NEO, PHA]          SPK-ID: 2052768
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 287 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .573083906595554 3.1225e-09  
a 2.38443523275951 3.3223e-09 au
q 1.017953774545611 7.2202e-09 au
i 5.865877515733178 1.9609e-06 deg
node 27.01552531450879 5.0352e-06 deg
peri 174.5661495781895 6.2713e-06 deg
M 12.10138702436232 7.2266e-07 deg
tp 2458955.292616436958
(2020-Apr-15.79261644)
2.6965e-06 TDB
period 1344.858903358038
3.68
2.8107e-06
7.695e-09
d
yr
n .2676860740566167 5.5946e-10 deg/d
Q 3.750916690973409 5.2263e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4742  
   # delay obs. used      3  
   # Doppler obs. used      0  
   data-arc span      12024 days (32.92 yr)  
   first obs. used      1987-06-30  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .2187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-01 06:00:37  

Additional Information
 Earth MOID = .0154377 au 
 Jupiter MOID = 1.20745 au 
 T_jup = 3.286 
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Orbital Elements at Epoch 2458076.5 (2017-Nov-19.0) TDB
Reference: JPL 287 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5727370817305142 3.097e-09  
q 1.016836546573012 7.2409e-09 au
tp 2457613.848573795987
(2016-Aug-13.34857380)
3.8439e-06 TDB
node 27.06488313287045 5.0194e-06 deg
peri 174.4492114549834 6.2608e-06 deg
i 5.879506142332164 1.9625e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      4742  
   # delay obs. used      3  
   # Doppler obs. used      0  
   data-arc span      12024 days (32.92 yr)  
   first obs. used      1987-06-30  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .2187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-01 06:00:37  

Additional Information
 Jupiter MOID = 1.20745 au 
 T_jup = 3.286 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.591697870957673E-18 -2.201613807029276E-17 -3.266310581348821E-15 -5.54046172907889E-15 3.049387563472299E-15 3.857810993991543E-16
q -2.201613807029276E-17 5.243085932477294E-17 3.93184325144331E-15 1.323496409031518E-14 -7.253751303782377E-15 -7.970145022099016E-16
tp -3.266310581348821E-15 3.93184325144331E-15 1.477568969544952E-11 -1.728386591699463E-12 1.033252650191707E-11 -8.073623596286932E-14
node -5.54046172907889E-15 1.323496409031518E-14 -1.728386591699463E-12 2.51938745519627E-11 -2.696123887992482E-11 -1.961373541969007E-13
peri 3.049387563472299E-15 -7.253751303782377E-15 1.033252650191707E-11 -2.696123887992482E-11 3.919773797574715E-11 3.779193741941516E-13
i 3.857810993991543E-16 -7.970145022099016E-16 -8.073623596286932E-14 -1.961373541969007E-13 3.779193741941516E-13 3.851401877902717E-12

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 15.8   n/a MPO422042  
diameter diameter 1.75 km 0.3 Arecibo initial assessment April 16-22, 2020 (S. Marshall, P. Taylor)  
rotation period rot_per 4.1120 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Koehn, B.W.; Bowell, E.L.G.; Skiff, B.A.; Sanborn, J.J.; et al. (2014) Minor Planet Bull. 41, 286-300.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46-4, in press.]

52768 (1998 OR2)          Discovered 1998-Jul-24 by NEAT at Haleakala
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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