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26237 (1998 QQ31)
Classification: Main-belt Asteroid          SPK-ID: 2026237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06223912409985013 4.0716e-08  
a 2.346270695167844 8.7661e-09 au
q 2.200240862199451 9.3984e-08 au
i 7.193342568841222 4.6765e-06 deg
node 5.065490212150311 2.5338e-05 deg
peri 219.2883998038308 3.93e-05 deg
M 175.5490309561341 3.1174e-05 deg
tp 2458560.379792933197
(2019-Mar-17.87979293)
0.00011307 TDB
period 1312.7003509443
3.59
7.3568e-06
2.014e-08
d
yr
n .2742438514174477 1.5369e-09 deg/d
Q 2.492300528136237 9.3117e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1985  
   data-arc span      17806 days (48.75 yr)  
   first obs. used      1972-04-19  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:18:21  

Additional Information
 Earth MOID = 1.19632 au 
 Jupiter MOID = 2.48494 au 
 T_jup = 3.548 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457303.5 (2015-Oct-08.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06144879307086112 4.0771e-08  
q 2.202235967098312 9.4032e-08 au
tp 2457248.060316090997
(2015-Aug-13.56031609)
0.0001137 TDB
node 5.130076052148952 2.5328e-05 deg
peri 219.5148625846608 3.9591e-05 deg
i 7.194656204147904 4.6772e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1985  
   data-arc span      17806 days (48.75 yr)  
   first obs. used      1972-04-19  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:18:21  

Additional Information
 Jupiter MOID = 2.48494 au 
 T_jup = 3.548 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.662291908614637E-15 -3.819793792387059E-15 -1.52503689489842E-12 -5.522192875879985E-15 -4.053428455377257E-13 -6.789732417416155E-16
q -3.819793792387059E-15 8.841967554133555E-15 3.650729187099831E-12 1.296115456107407E-14 9.716247914896363E-13 1.790031741548098E-15
tp -1.52503689489842E-12 3.650729187099831E-12 1.292737138589173E-8 1.102430284070865E-11 3.467098341522817E-9 1.692819348812949E-12
node -5.522192875879985E-15 1.296115456107407E-14 1.102430284070865E-11 6.414947966853996E-10 -6.329116509261718E-10 1.324479708818357E-11
peri -4.053428455377257E-13 9.716247914896363E-13 3.467098341522817E-9 -6.329116509261718E-10 1.567449411768492E-9 -1.270240318652061E-11
i -6.789732417416155E-16 1.790031741548098E-15 1.692819348812949E-12 1.324479708818357E-11 -1.270240318652061E-11 2.18766605847486E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.51   n/a E2021B10  
rotation period rot_per 3.52405 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.]

26237 (1998 QQ31)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QQ31 = 1972 HH1 = 1999 XX194 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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