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91826 (1999 TP281)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091826
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07383618746502506 4.4108e-08  
a 3.204231006746913 2.5299e-08 au
q 2.967642805451502 1.3868e-07 au
i 15.48997706810775 4.8853e-06 deg
node 108.7362883793935 1.6534e-05 deg
peri 338.9537408689087 3.4599e-05 deg
M 163.7267201753117 3.2905e-05 deg
tp 2458047.701167916335
(2017-Oct-21.20116792)
0.00018682 TDB
period 2095.000615555246
5.74
2.4812e-05
6.793e-08
d
yr
n .1718376583410157 2.0351e-09 deg/d
Q 3.440819208042325 2.7167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      7176 days (19.65 yr)  
   first obs. used      1999-09-14  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54965  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:46  

Additional Information
 Earth MOID = 1.98903 au 
 Jupiter MOID = 1.73211 au 
 T_jup = 3.132 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456591.5 (2013-Oct-26.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07630582254405402 4.4206e-08  
q 2.95702455839205 1.3954e-07 au
tp 2455952.671064047116
(2012-Jan-26.17106405)
0.00017271 TDB
node 108.7638916318117 1.6546e-05 deg
peri 338.4757273407895 3.3704e-05 deg
i 15.48913383502193 4.8854e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      7176 days (19.65 yr)  
   first obs. used      1999-09-14  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54965  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:46  

Additional Information
 Jupiter MOID = 1.73211 au 
 T_jup = 3.132 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.954158452872635E-15 -6.080446563079036E-15 -3.789837215351644E-13 -3.611404179917715E-15 -5.004637016757187E-14 2.307877231865058E-15
q -6.080446563079036E-15 1.947230591224311E-14 2.254066614943006E-12 1.404659508427674E-14 3.612222448955209E-13 -5.794183266875126E-15
tp -3.789837215351644E-13 2.254066614943006E-12 2.982781627258323E-8 -3.612224182786598E-12 5.096734250850298E-9 -2.98827589186433E-12
node -3.611404179917715E-15 1.404659508427674E-14 -3.612224182786598E-12 2.737788352617629E-10 -2.639084392985168E-10 -1.402678900905156E-11
peri -5.004637016757187E-14 3.612222448955209E-13 5.096734250850298E-9 -2.639084392985168E-10 1.135947878298702E-9 1.311814880942762E-11
i 2.307877231865058E-15 -5.794183266875126E-15 -2.98827589186433E-12 -1.402678900905156E-11 1.311814880942762E-11 2.386739945096726E-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 13.9   n/a MPO474797  
diameter diameter 8.853 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91826 (1999 TP281)          Discovered 1999-Oct-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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