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JPL Small-Body Database Browser
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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1114822452088586 2.7084e-08  
a 2.173577708854407 6.6531e-09 au
q 1.931262385735391 5.9593e-08 au
i 3.461366134277254 3.2062e-06 deg
node 310.4012229998741 7.2933e-05 deg
peri 337.6423481952777 7.6217e-05 deg
M 264.3080278656026 2.4122e-05 deg
tp 2459311.624483411758
(2021-Apr-07.12448341)
7.8954e-05 TDB
period 1170.472418218367
3.20
5.3741e-06
1.471e-08
d
yr
n .3075681189890603 1.4122e-09 deg/d
Q 2.415893031973423 7.3948e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1321  
   data-arc span      7936 days (21.73 yr)  
   first obs. used      1998-04-16  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52525  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:45:44  

Additional Information
 Earth MOID = .915472 au 
 Jupiter MOID = 2.7143 au 
 T_jup = 3.676 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1990-Oct-12 04:38 < 00:01 Eunom 0.0167741387312452 0.0167735098111866 0.0167747676593378 4.51741843179123 4.51741824653905 2448176.692934734 0.421599990246339 107.288388620056 30.8352121217649 -86.8862020707795 81200.4244846732 T 23 CATAB v2.0f-lin.ifort 2020-Jan-29 07:46:12 2020-Jan-29 07:46

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