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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2278953735051353 2.9197e-08  
a 2.332400861876164 7.5393e-09 au
q 1.800857496295196 6.8823e-08 au
i 2.150691993042091 4.3432e-06 deg
node 191.7322827370494 9.3377e-05 deg
peri 138.6363560503471 9.3909e-05 deg
M 153.5636754642236 1.0392e-05 deg
tp 2458841.504816513038
(2019-Dec-24.00481651)
3.6646e-05 TDB
period 1301.077650370867
3.56
6.3085e-06
1.727e-08
d
yr
n .2766937084019416 1.3416e-09 deg/d
Q 2.863944227457132 9.2575e-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 = .790011 au 
 Jupiter MOID = 2.50232 au 
 T_jup = 3.534 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457235.5 (2015-Aug-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2282823914099415 2.9188e-08  
q 1.799225645093467 6.8799e-08 au
tp 2457541.651415992845
(2016-Jun-02.15141599)
3.5226e-05 TDB
node 191.775423339243 9.3344e-05 deg
peri 138.7512599664173 9.3876e-05 deg
i 2.151140683703077 4.3456e-06 deg
  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
 Jupiter MOID = 2.50232 au 
 T_jup = 3.534 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.519413572228918E-16 -2.000989904006007E-15 3.037155029998518E-13 8.172954656318031E-15 6.923184866545636E-14 1.193640532800686E-16
q -2.000989904006007E-15 4.73328363004306E-15 -6.825149775544754E-13 -1.781420806265242E-14 -1.570769633004512E-13 -9.855331528838621E-17
tp 3.037155029998518E-13 -6.825149775544754E-13 1.240859165562386E-9 1.175452976416312E-11 3.613398215977238E-10 8.478049171597221E-13
node 8.172954656318031E-15 -1.781420806265242E-14 1.175452976416312E-11 8.713057152016184E-9 -8.702974036707669E-9 1.108188195073635E-10
peri 6.923184866545636E-14 -1.570769633004512E-13 3.613398215977238E-10 -8.702974036707669E-9 8.812675114622788E-9 -1.104921862334172E-10
i 1.193640532800686E-16 -9.855331528838621E-17 8.478049171597221E-13 1.108188195073635E-10 -1.104921862334172E-10 1.888386378701675E-11

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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