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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968607876069313 3.6478e-08  
a 2.361824932539747 7.5174e-09 au
q 1.896874216130285 8.4361e-08 au
i 2.903131765541398 4.7566e-06 deg
node 335.6093544905842 6.6905e-05 deg
peri 316.8701949209473 6.7904e-05 deg
M 164.153365891618 1.168e-05 deg
tp 2458595.970814447989
(2019-Apr-22.47081445)
4.2678e-05 TDB
period 1325.775475980273
3.63
6.3297e-06
1.733e-08
d
yr
n .2715391908526724 1.2964e-09 deg/d
Q 2.826775648949209 8.9973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1039  
   data-arc span      15177 days (41.55 yr)  
   first obs. used      1979-08-22  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52142  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:11:28  

Additional Information
 Earth MOID = .880076 au 
 Jupiter MOID = 2.36774 au 
 T_jup = 3.522 
[ 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 15.54   n/a E2021B10  
rotation period rot_per 3.62 h n/a LCDB (Rev. 2020-October); 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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