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85982 (1999 HQ6)
Classification: Main-belt Asteroid          SPK-ID: 2085982
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1141443457919675 5.2525e-08  
a 2.692091645311872 1.37e-08 au
q 2.384804605645727 1.4349e-07 au
i 8.902797007822471 5.6407e-06 deg
node 2.293329111768128 2.7083e-05 deg
peri 351.5128841904689 3.3409e-05 deg
M 118.7997120974275 1.8586e-05 deg
tp 2458468.090158631201
(2018-Dec-15.59015863)		 8.298e-05 TDB
period 1613.367065532796
4.42		 1.2316e-05
3.372e-08		 d
yr
n .2231358304572271 1.7033e-09 deg/d
Q 2.999378684978018 1.5264e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      7892 days (21.61 yr)  
   first obs. used      1999-03-22  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:06  

Additional Information
 Earth MOID = 1.38046 au 
 Jupiter MOID = 2.43384 au 
 T_jup = 3.345 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456445.5 (2013-Jun-02.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151050507357743 5.2929e-08  
q 2.38188132037338 1.4478e-07 au
tp 2456848.369894765245
(2014-Jul-09.86989477)		 8.1601e-05 TDB
node 2.359172612015498 2.7056e-05 deg
peri 350.1250734593701 3.3219e-05 deg
i 8.910860341380948 5.6436e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      7892 days (21.61 yr)  
   first obs. used      1999-03-22  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:06  

Additional Information
 Jupiter MOID = 2.43384 au 
 T_jup = 3.345 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.801512825535849E-15 -7.637234688528939E-15 -2.336258688858343E-13 -1.24166456967556E-15 -1.125606299472733E-13 -3.250789099142183E-15
q -7.637234688528939E-15 2.096216425627418E-14 5.651290047470605E-13 3.546664714976287E-15 2.81479949188925E-13 8.928810059118412E-15
tp -2.336258688858343E-13 5.651290047470605E-13 6.658659115871249E-9 3.967379239340812E-12 1.584017204087793E-9 -2.798896004771647E-12
node -1.24166456967556E-15 3.546664714976287E-15 3.967379239340812E-12 7.3202213220661E-10 -7.216323710095015E-10 -1.666355825395867E-11
peri -1.125606299472733E-13 2.81479949188925E-13 1.584017204087793E-9 -7.216323710095015E-10 1.103502633521004E-9 1.583277602545518E-11
i -3.250789099142183E-15 8.928810059118412E-15 -2.798896004771647E-12 -1.666355825395867E-11 1.583277602545518E-11 3.185001366200128E-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 14.4   n/a MPO366219  
rotation period rot_per 27.4733 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

85982 (1999 HQ6)          Discovered 1999-Apr-19 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1999 HQ6 = 2001 SK110 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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