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JPL Small-Body Database Browser
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20949 (3024 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2020949
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03021854910838271 6.6177e-08  
a 2.663797037285448 2.0194e-08 au
q 2.583300955699474 1.7435e-07 au
i 22.07004309810659 8.047e-06 deg
node 7.6894907424374 1.8438e-05 deg
peri 81.77344466799615 0.00017181 deg
M 181.4148913834611 0.00016584 deg
tp 2459788.258078707849
(2022-Jul-27.75807871)
0.00073189 TDB
period 1587.9986328746
4.35
1.8057e-05
4.944e-08
d
yr
n .2267004470578963 2.5779e-09 deg/d
Q 2.744293118871423 2.0804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      21401 days (58.59 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:47:28  

Additional Information
 Earth MOID = 1.64096 au 
 Jupiter MOID = 2.3011 au 
 T_jup = 3.279 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457171.5 (2015-May-29.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03168487023301517 6.617e-08  
q 2.577804820238071 1.745e-07 au
tp 2456614.604266518260
(2013-Nov-18.10426652)
0.00069508 TDB
node 7.732247070859111 1.8435e-05 deg
peri 81.8782785875627 0.00016373 deg
i 22.07781033238189 8.0486e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      21401 days (58.59 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:47:28  

Additional Information
 Jupiter MOID = 2.3011 au 
 T_jup = 3.279 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.378477250240375E-15 -1.147443934468235E-14 -1.312026337963177E-11 1.631825444706306E-14 -3.107074224343775E-12 -2.962051653068624E-14
q -1.147443934468235E-14 3.044896982384103E-14 3.456458435334395E-11 -4.149922326218003E-14 8.204694059380763E-12 8.091545293880436E-14
tp -1.312026337963177E-11 3.456458435334395E-11 4.831407183008343E-7 -3.083976819088911E-10 1.131282021244927E-7 1.474074470211548E-10
node 1.631825444706306E-14 -4.149922326218003E-14 -3.083976819088911E-10 3.39840744718827E-10 -3.856652133128514E-10 1.483068264657251E-11
peri -3.107074224343775E-12 8.204694059380763E-12 1.131282021244927E-7 -3.856652133128514E-10 2.68080793335235E-8 2.056267206678705E-11
i -2.962051653068624E-14 8.091545293880436E-14 1.474074470211548E-10 1.483068264657251E-11 2.056267206678705E-11 6.477930261325022E-11

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 MPO337435  
diameter diameter 2.584 km 0.501 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.201   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20949 (3024 T-2)          Discovered 1973-Sep-30 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 3024 T-2 = 1993 FV6 = 4720 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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