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JPL Small-Body Database Browser
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48962 (1998 QH31)
Classification: Main-belt Asteroid          SPK-ID: 2048962
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1863429267628277 4.9951e-08  
a 2.374620452155776 1.5656e-08 au
q 1.9321267271502 1.2081e-07 au
i 3.92760396014571 5.0121e-06 deg
node 107.8456800496303 8.2413e-05 deg
peri 204.5760273791817 8.4501e-05 deg
M 355.0115093124974 2.5327e-05 deg
tp 2459019.020657390080
(2020-Jun-18.52065739)
9.4143e-05 TDB
period 1336.563918447752
3.66
1.3218e-05
3.619e-08
d
yr
n .2693473877538861 2.6637e-09 deg/d
Q 2.817114177161353 1.8573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      7572 days (20.73 yr)  
   first obs. used      1998-07-31  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62588  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:40  

Additional Information
 Earth MOID = .918709 au 
 Jupiter MOID = 2.4535 au 
 T_jup = 3.516 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456453.5 (2013-Jun-10.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185866484496388 4.9728e-08  
q 1.932591372740494 1.2024e-07 au
tp 2456344.130086782727
(2013-Feb-20.63008678)
8.1291e-05 TDB
node 107.8887684065673 8.2318e-05 deg
peri 204.0892983275027 8.4424e-05 deg
i 3.929332428155445 5.014e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      7572 days (20.73 yr)  
   first obs. used      1998-07-31  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62588  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:48:40  

Additional Information
 Jupiter MOID = 2.4535 au 
 T_jup = 3.516 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.47285935530233E-15 -5.946586011983966E-15 9.342931747054226E-13 -6.113085622169002E-15 2.274516783160262E-13 1.598887254450706E-15
q -5.946586011983966E-15 1.445722860850598E-14 -1.812515112089973E-12 1.33545165019191E-14 -4.489411923067741E-13 -3.389744623916709E-15
tp 9.342931747054226E-13 -1.812515112089973E-12 6.608267653936421E-9 -2.146747858611606E-11 1.562853291031719E-9 2.906053830670987E-12
node -6.113085622169002E-15 1.33545165019191E-14 -2.146747858611606E-11 6.776180725697552E-9 -6.764821918106566E-9 6.858924371486367E-11
peri 2.274516783160262E-13 -4.489411923067741E-13 1.562853291031719E-9 -6.764821918106566E-9 7.127464352258435E-9 -6.778084140652903E-11
i 1.598887254450706E-15 -3.389744623916709E-15 2.906053830670987E-12 6.858924371486367E-11 -6.778084140652903E-11 2.513974739553754E-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 16.0   n/a MPO432047  

48962 (1998 QH31)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QH31 = 1999 XE254 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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