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49688 (1999 TO198)
Classification: Main-belt Asteroid          SPK-ID: 2049688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1114822457623555 2.6064e-08  
a 2.173577709162563 6.3909e-09 au
q 1.931262384806124 5.7835e-08 au
i 3.461366023028974 3.1959e-06 deg
node 310.4012315781431 6.3332e-05 deg
peri 337.6423385568307 6.681e-05 deg
M 264.3080287112449 2.356e-05 deg
tp 2459311.624480728474
(2021-Apr-07.12448073)
7.7226e-05 TDB
period 1170.47241846728
3.20
5.1623e-06
1.413e-08
d
yr
n .3075681189236528 1.3565e-09 deg/d
Q 2.415893033519001 7.1034e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1554  
   data-arc span      8048 days (22.03 yr)  
   first obs. used      1998-04-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:57:14  

Additional Information
 Earth MOID = .915472 au 
 Jupiter MOID = 2.7143 au 
 T_jup = 3.676 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456878.5 (2014-Aug-09.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117926957931538 2.6048e-08  
q 1.930676580938222 5.7818e-08 au
tp 2456970.368944683414
(2014-Nov-08.86894468)
7.2842e-05 TDB
node 310.4659939005855 6.3294e-05 deg
peri 337.6079766369155 6.6757e-05 deg
i 3.462589157840049 3.1971e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1554  
   data-arc span      8048 days (22.03 yr)  
   first obs. used      1998-04-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:57:14  

Additional Information
 Jupiter MOID = 2.7143 au 
 T_jup = 3.676 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.784769273346949E-16 -1.499007038358605E-15 -3.077863896527474E-14 -1.152940696539542E-15 -3.02528818913855E-15 3.29137406691464E-18
q -1.499007038358605E-15 3.342964421323192E-15 2.080783560448757E-13 2.707733284896924E-15 4.572033393461307E-14 3.905316359930177E-17
tp -3.077863896527474E-14 2.080783560448757E-13 5.305893526178776E-9 6.363046172138964E-12 1.561105127553739E-9 4.956146880600289E-13
node -1.152940696539542E-15 2.707733284896924E-15 6.363046172138964E-12 4.006106086385876E-9 -3.996639996833168E-9 4.993980226146799E-11
peri -3.02528818913855E-15 4.572033393461307E-14 1.561105127553739E-9 -3.996639996833168E-9 4.456465535892838E-9 -4.971489767702163E-11
i 3.29137406691464E-18 3.905316359930177E-17 4.956146880600289E-13 4.993980226146799E-11 -4.971489767702163E-11 1.022175632522534E-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 15.2   n/a MPO412512  
diameter diameter 2.631 km 0.345 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.255   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49688 (1999 TO198)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TO198 = 1998 KQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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