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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1114822442005322 2.652e-08  
a 2.173577708787021 6.507e-09 au
q 1.931262387867193 5.862e-08 au
i 3.461366123333748 3.2057e-06 deg
node 310.4012288692608 6.7381e-05 deg
peri 337.642342570728 7.0754e-05 deg
M 264.3080277523977 2.3801e-05 deg
tp 2459311.624483765354
(2021-Apr-07.12448377)
7.7966e-05 TDB
period 1170.472418163936
3.20
5.256e-06
1.439e-08
d
yr
n .3075681190033634 1.3811e-09 deg/d
Q 2.415893029706848 7.2324e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1404  
   data-arc span      7965 days (21.81 yr)  
   first obs. used      1998-04-16  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:32:52  

Additional Information
 Earth MOID = .915472 au 
 Jupiter MOID = 2.7143 au 
 T_jup = 3.676 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456736.5 (2014-Mar-20.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117338423490052 2.6497e-08  
q 1.930661575133911 5.8585e-08 au
tp 2456970.437492702841
(2014-Nov-08.93749270)
7.3962e-05 TDB
node 310.4681700323314 6.7344e-05 deg
peri 337.6298552477235 7.0707e-05 deg
i 3.462564796356177 3.2068e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1404  
   data-arc span      7965 days (21.81 yr)  
   first obs. used      1998-04-16  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:32:52  

Additional Information
 Jupiter MOID = 2.7143 au 
 T_jup = 3.676 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.020985721303177E-16 -1.544932401417859E-15 -9.137972746528631E-14 4.887532464540272E-16 -2.655370654234596E-14 -9.899304336703865E-18
q -1.544932401417859E-15 3.432149679049449E-15 3.262428010590537E-13 -4.285628860675136E-16 9.154486707177725E-14 6.403936775196463E-17
tp -9.137972746528631E-14 3.262428010590537E-13 5.470417557425198E-9 1.561633156178865E-11 1.610969891881369E-9 3.751954279939561E-13
node 4.887532464540272E-16 -4.285628860675136E-16 1.561633156178865E-11 4.535217455757519E-9 -4.522052252546753E-9 4.49487371359055E-11
peri -2.655370654234596E-14 9.154486707177725E-14 1.610969891881369E-9 -4.522052252546753E-9 4.999420990512388E-9 -4.476901813887181E-11
i -9.899304336703865E-18 6.403936775196463E-17 3.751954279939561E-13 4.49487371359055E-11 -4.476901813887181E-11 1.02838248730629E-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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