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52785 (1998 QN38)
Classification: Main-belt Asteroid          SPK-ID: 2052785
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2279016729828391 2.9186e-08  
a 2.332172132049612 7.5203e-09 au
q 1.800666201471551 6.878e-08 au
i 2.150598173908283 4.3432e-06 deg
node 191.7438024536211 9.3386e-05 deg
peri 138.591946982653 9.3919e-05 deg
M 99.37295636808328 1.03e-05 deg
tp 2458841.408571433632
(2019-Dec-23.90857143)
3.6646e-05 TDB
period 1300.886267336738
3.56
6.2922e-06
1.723e-08
d
yr
n .2767344148670401 1.3385e-09 deg/d
Q 2.863678062627673 9.2341e-09 au
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      10681 days (29.24 yr)  
   first obs. used      1991-10-08  
   last obs. used      2021-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:48:06  

Additional Information
 Earth MOID = .788644 au 
 Jupiter MOID = 2.50281 au 
 T_jup = 3.534 
[ 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 16.49   n/a MPCxxxxx  
rotation period rot_per 7.04 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]

52785 (1998 QN38)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QN38 = 2001 HP52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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