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85136 (1979 QX2)
Classification: Main-belt Asteroid          SPK-ID: 2085136
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1969678822089867 3.6488e-08  
a 2.361419267138408 7.7701e-09 au
q 1.896295515082658 8.4418e-08 au
i 2.90307720359185 5.2028e-06 deg
node 335.6132773685505 6.9598e-05 deg
peri 316.8187557123907 7.0833e-05 deg
M 109.8954648363537 1.2538e-05 deg
tp 2458595.891175930456
(2019-Apr-22.39117593)
4.616e-05 TDB
period 1325.433919242603
3.63
6.5419e-06
1.791e-08
d
yr
n .2716091649485746 1.3406e-09 deg/d
Q 2.826543019194157 9.3006e-09 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      14775 days (40.45 yr)  
   first obs. used      1979-08-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5288  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:27:07  

Additional Information
 Earth MOID = .881457 au 
 Jupiter MOID = 2.36848 au 
 T_jup = 3.523 
[ 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 15.5   n/a MPO263966  
rotation period rot_per 3.62 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

85136 (1979 QX2)          Discovered 1979-Aug-22 by Lagerkvist, C.-I. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1979 QX2 = 1990 SR14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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