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44712 (1999 TJ5)
Classification: Main-belt Asteroid          SPK-ID: 2044712
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .171662050144464 4.3444e-08  
a 2.191250951642391 6.8542e-09 au
q 1.815096320902451 9.5378e-08 au
i 3.854060322365743 4.4393e-06 deg
node 347.1459639128068 4.5092e-05 deg
peri 6.998854613678452 4.5969e-05 deg
M 156.3608070774408 9.827e-06 deg
tp 2458485.909213504302
(2019-Jan-02.40921350)
3.1293e-05 TDB
period 1184.776969376355
3.24
5.5589e-06
1.522e-08
d
yr
n .3038546572942734 1.4257e-09 deg/d
Q 2.567405582382332 8.0308e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      8111 days (22.21 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57541  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:55:48  

Additional Information
 Earth MOID = .810084 au 
 Jupiter MOID = 2.86354 au 
 T_jup = 3.650 
[ 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 15.4   n/a MPO347837  
diameter diameter 2.180 km 0.456 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.309   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

44712 (1999 TJ5)          Discovered 1999-Oct-04 by Sarounova, L. at Ondrejov
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TJ5 = 1998 HC38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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