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181057 (2005 PT18)
Classification: Main-belt Asteroid          SPK-ID: 2181057
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2826942164838769 6.2003e-08  
a 3.089427158004545 2.9653e-08 au
q 2.21606396818844 1.9378e-07 au
i 13.63167635274088 6.9029e-06 deg
node 308.4362801220416 2.7477e-05 deg
peri 17.25526095524164 2.9897e-05 deg
M 312.0288395282089 1.6111e-05 deg
tp 2459464.797521608095
(2021-Sep-07.29752161)
9.1537e-05 TDB
period 1983.423099277835
5.43
2.8556e-05
7.818e-08
d
yr
n .1815043901278936 2.6132e-09 deg/d
Q 3.96279034782065 3.8035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      7142 days (19.55 yr)  
   first obs. used      2000-11-06  
   last obs. used      2020-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:02  

Additional Information
 Earth MOID = 1.20551 au 
 Jupiter MOID = 1.40706 au 
 T_jup = 3.121 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457140.5 (2015-Apr-28.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2813060375003237 6.2016e-08  
q 2.221557690181001 1.9354e-07 au
tp 2457481.359855292916
(2016-Apr-02.85985529)
7.3078e-05 TDB
node 308.4453371576512 2.7487e-05 deg
peri 17.39959312792619 2.9928e-05 deg
i 13.62415625591281 6.8992e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      7142 days (19.55 yr)  
   first obs. used      2000-11-06  
   last obs. used      2020-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:02  

Additional Information
 Jupiter MOID = 1.40706 au 
 T_jup = 3.121 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.846039954928033E-15 -1.192776684593267E-14 9.936808812900679E-13 1.974874052774113E-14 4.554454684052484E-14 -5.861823927483001E-15
q -1.192776684593267E-14 3.745644034960548E-14 -2.231760861987818E-12 -5.614375974575265E-14 -2.356026352922051E-14 1.983675605157217E-14
tp 9.936808812900679E-13 -2.231760861987818E-12 5.340337466917288E-9 2.981468410916312E-12 9.060091995889345E-10 -8.698960968526084E-12
node 1.974874052774113E-14 -5.614375974575265E-14 2.981468410916312E-12 7.555399538498931E-10 -7.335525795650238E-10 2.464237721274518E-11
peri 4.554454684052484E-14 -2.356026352922051E-14 9.060091995889345E-10 -7.335525795650238E-10 8.956935472478659E-10 -2.549114374591586E-11
i -5.861823927483001E-15 1.983675605157217E-14 -8.698960968526084E-12 2.464237721274518E-11 -2.549114374591586E-11 4.759919003695809E-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 14.9   n/a MPO396423  
diameter diameter 2.732 km 0.593 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181057 (2005 PT18)          Discovered 2005-Aug-09 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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