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19887 (1279 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2019887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663771622772762 3.2491e-08  
a 2.23646666929278 5.2419e-09 au
q 1.864369691328135 7.1751e-08 au
i 1.331025112478043 3.1325e-06 deg
node 173.3981815499254 0.0001315 deg
peri 214.1233098335802 0.0001318 deg
M 25.94003526510235 7.9711e-06 deg
tp 2459112.474169040554
(2020-Sep-19.97416904)
2.7061e-05 TDB
period 1221.636702554252
3.34
4.295e-06
1.176e-08
d
yr
n .2946866275770006 1.036e-09 deg/d
Q 2.608563647257424 6.114e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1482  
   data-arc span      17352 days (47.51 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50631  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:26  

Additional Information
 Earth MOID = .867814 au 
 Jupiter MOID = 2.83438 au 
 T_jup = 3.619 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457496.5 (2016-Apr-18.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16761030974547 3.2574e-08  
q 1.861225735942259 7.2016e-08 au
tp 2457890.540611768144
(2017-May-17.04061177)
2.717e-05 TDB
node 173.4638058612311 0.00013153 deg
peri 214.0372353636781 0.00013182 deg
i 1.33092385051741 3.134e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1482  
   data-arc span      17352 days (47.51 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50631  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:26  

Additional Information
 Jupiter MOID = 2.83438 au 
 T_jup = 3.619 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.061087819483037E-15 -2.341799753343067E-15 5.318758389848712E-15 2.062825037441372E-15 -2.623807849536099E-14 -4.031875940418967E-16
q -2.341799753343067E-15 5.186309541987528E-15 -3.493537549496054E-14 -3.957008538842284E-15 4.844508521493155E-14 9.194691249020109E-16
tp 5.318758389848712E-15 -3.493537549496054E-14 7.382078245407958E-10 -1.510143083656593E-12 2.45291359097458E-10 -2.261900952111429E-13
node 2.062825037441372E-15 -3.957008538842284E-15 -1.510143083656593E-12 1.729908653763209E-8 -1.729469025326323E-8 1.05739424527613E-10
peri -2.623807849536099E-14 4.844508521493155E-14 2.45291359097458E-10 -1.729469025326323E-8 1.737638649856303E-8 -1.057817617355798E-10
i -4.031875940418967E-16 9.194691249020109E-16 -2.261900952111429E-13 1.05739424527613E-10 -1.057817617355798E-10 9.821921105918592E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.59   n/a E2021B10  

19887 (1279 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1279 T-2 = 1993 QQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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