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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 286 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5730839068207639 3.1227e-09  
a 2.384435232787223 3.3223e-09 au
q 1.017953774020444 7.2207e-09 au
i 5.865877620140473 1.9637e-06 deg
node 27.01552519536889 5.0363e-06 deg
peri 174.5661496015714 6.2748e-06 deg
M 12.10138704233093 7.2313e-07 deg
tp 2458955.292616369044
(2020-Apr-15.79261637)
2.6983e-06 TDB
period 1344.858903381484
3.68
2.8108e-06
7.696e-09
d
yr
n .2676860740519499 5.5947e-10 deg/d
Q 3.750916691554002 5.2263e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4739  
   # delay obs. used      3  
   # Doppler obs. used      0  
   data-arc span      11996 days (32.84 yr)  
   first obs. used      1987-06-30  
   last obs. used      2020-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .21867  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-16 06:35:56  

Additional Information
 Earth MOID = .0154377 au 
 Jupiter MOID = 1.20745 au 
 T_jup = 3.286 
[ 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 15.8   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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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