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27972 (1997 TA18)
Classification: Main-belt Asteroid          SPK-ID: 2027972
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797533657904038 4.6181e-08  
a 2.637717093939552 9.2875e-09 au
q 2.163578568301034 1.2048e-07 au
i 11.47360046649768 5.0634e-06 deg
node 187.3480423865364 1.9703e-05 deg
peri 225.9729885247597 2.267e-05 deg
M 121.1058989943074 1.0445e-05 deg
tp 2458474.114951872573
(2018-Dec-21.61495187)
4.4709e-05 TDB
period 1564.734822164038
4.28
8.2643e-06
2.263e-08
d
yr
n .2300709327233592 1.2151e-09 deg/d
Q 3.111855619578069 1.0957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1340  
   data-arc span      9676 days (26.49 yr)  
   first obs. used      1992-09-30  
   last obs. used      2019-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49905  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:06:29  

Additional Information
 Earth MOID = 1.18992 au 
 Jupiter MOID = 2.34154 au 
 T_jup = 3.345 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456096.5 (2012-Jun-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776863817198519 4.6043e-08  
q 2.170940002473314 1.199e-07 au
tp 2455341.606892379868
(2010-May-25.10689238)
4.5285e-05 TDB
node 187.416259369114 1.9726e-05 deg
peri 225.9799973302702 2.2768e-05 deg
i 11.46008680417244 5.0578e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1340  
   data-arc span      9676 days (26.49 yr)  
   first obs. used      1992-09-30  
   last obs. used      2019-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49905  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:06:29  

Additional Information
 Jupiter MOID = 2.34154 au 
 T_jup = 3.345 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.119915380654005E-15 -5.509788141127277E-15 -6.476729043075045E-13 -5.058083548666393E-16 -1.639753602119505E-13 -8.426676945346455E-15
q -5.509788141127277E-15 1.437625739626259E-14 1.649521035134093E-12 1.975590959108425E-15 4.237913573455698E-13 2.214993358863162E-14
tp -6.476729043075045E-13 1.649521035134093E-12 2.050721334681321E-9 -2.700064177236839E-12 5.273795661171694E-10 1.239220633123979E-12
node -5.058083548666393E-16 1.975590959108425E-15 -2.700064177236839E-12 3.891009979698014E-10 -3.817749257301874E-10 3.38888359403209E-11
peri -1.639753602119505E-13 4.237913573455698E-13 5.273795661171694E-10 -3.817749257301874E-10 5.184013452232508E-10 -3.299023454312086E-11
i -8.426676945346455E-15 2.214993358863162E-14 1.239220633123979E-12 3.38888359403209E-11 -3.299023454312086E-11 2.55815988794804E-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 14.4   n/a MPO324567  
diameter diameter 5.780 km 1.299 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.101   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

27972 (1997 TA18)          Discovered 1997-Oct-08 by Sugie, A. at Dynic
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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