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49687 (1999 TQ178)
Classification: Main-belt Asteroid          SPK-ID: 2049687
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07987069133177822 4.0446e-08  
a 2.22552037468393 9.3646e-09 au
q 2.047766523784966 8.8271e-08 au
i 2.421782782336886 4.5073e-06 deg
node 269.5478522647218 9.3014e-05 deg
peri 311.9381400206464 9.787e-05 deg
M 237.7050634876775 3.269e-05 deg
tp 2459412.456883445400
(2021-Jul-16.95688345)
0.000111 TDB
period 1212.67880968564
3.32
7.6541e-06
2.096e-08
d
yr
n .296863437477993 1.8737e-09 deg/d
Q 2.403274225582893 1.0113e-08 au
  Orbit Determination Parameters
   # obs. used (total)      774  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57598  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:32:52  

Additional Information
 Earth MOID = 1.03992 au 
 Jupiter MOID = 2.57293 au 
 T_jup = 3.641 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO347863  

49687 (1999 TQ178)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TQ178 = 1998 KO18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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