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29162 (1989 SD4)
Classification: Main-belt Asteroid          SPK-ID: 2029162
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04467774499249393 5.4636e-08  
a 2.578835511828354 1.5382e-08 au
q 2.463618956453299 1.4955e-07 au
i 15.16159604075816 5.9749e-06 deg
node 34.26198953012076 1.4304e-05 deg
peri 95.91832552476932 9.8877e-05 deg
M 36.39775247576387 9.2281e-05 deg
tp 2458847.565327862987
(2019-Dec-30.06532786)
0.00038828 TDB
period 1512.634111295334
4.14
1.3534e-05
3.705e-08
d
yr
n .2379954261984191 2.1294e-09 deg/d
Q 2.694052067203409 1.6069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1527  
   data-arc span      11060 days (30.28 yr)  
   first obs. used      1989-09-26  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 03:19:53  

Additional Information
 Earth MOID = 1.522 au 
 Jupiter MOID = 2.34189 au 
 T_jup = 3.375 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456944.5 (2014-Oct-14.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04442518936989719 5.6637e-08  
q 2.464128137201373 1.5485e-07 au
tp 2457341.590855434929
(2015-Nov-15.09085544)
0.0003879 TDB
node 34.30716863001972 1.4316e-05 deg
peri 97.57747053782109 9.7418e-05 deg
i 15.15612610931716 5.9725e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1527  
   data-arc span      11060 days (30.28 yr)  
   first obs. used      1989-09-26  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 03:19:53  

Additional Information
 Jupiter MOID = 2.34189 au 
 T_jup = 3.375 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.2077790350368E-15 -8.743094886393022E-15 1.642855553167787E-11 -1.952653135347511E-14 4.144550574471469E-12 -1.294948164906346E-14
q -8.743094886393022E-15 2.397826134533271E-14 -4.485875776008748E-11 5.333176582133626E-14 -1.13278946041316E-11 3.582554594305524E-14
tp 1.642855553167787E-11 -4.485875776008748E-11 1.504683015615673E-7 -1.423440358705907E-10 3.738248836797073E-8 -8.299712570189197E-11
node -1.952653135347511E-14 5.333176582133626E-14 -1.423440358705907E-10 2.049619245751933E-10 -2.327423458666843E-10 -2.804564568546714E-11
peri 4.144550574471469E-12 -1.13278946041316E-11 3.738248836797073E-8 -2.327423458666843E-10 9.490312578200786E-9 6.331898194871162E-12
i -1.294948164906346E-14 3.582554594305524E-14 -8.299712570189197E-11 -2.804564568546714E-11 6.331898194871162E-12 3.567072783042054E-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 13.9   n/a MPO502376  
diameter diameter 5.116 km 0.574 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.505 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.223   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

29162 (1989 SD4)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 SD4 = 1989 TB4 = 2000 JZ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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