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296 Phaetusa (A890 QB)
Classification: Main-belt Asteroid          SPK-ID: 2000296
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597850071846239 3.2491e-08  
a 2.228938014394022 4.2352e-09 au
q 1.872787137749992 7.2129e-08 au
i 1.747947611374066 2.9219e-06 deg
node 121.5642460870221 0.00011537 deg
peri 252.4640696309771 0.00011569 deg
M 327.3525516768588 8.9226e-06 deg
tp 2459110.728057965063
(2020-Sep-18.22805797)
3.0154e-05 TDB
period 1215.473272969242
3.33
3.4642e-06
9.484e-09
d
yr
n .2961809263979678 8.4415e-10 deg/d
Q 2.585088891038052 4.9119e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2962  
   data-arc span      36575 days (100.14 yr)  
   first obs. used      1920-09-07  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41953  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:11  

Additional Information
 Earth MOID = .874284 au 
 Jupiter MOID = 2.87789 au 
 T_jup = 3.626 
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Orbital Elements at Epoch 2456601.5 (2013-Nov-05.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597031774271866 3.2435e-08  
q 1.872922012049266 7.2018e-08 au
tp 2456679.748128717992
(2014-Jan-22.24812872)
3.047e-05 TDB
node 121.5819382951195 0.00011545 deg
peri 252.4766707501121 0.00011577 deg
i 1.746982090608458 2.9213e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2962  
   data-arc span      36575 days (100.14 yr)  
   first obs. used      1920-09-07  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41953  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:11  

Additional Information
 Jupiter MOID = 2.87789 au 
 T_jup = 3.626 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.052010661944214E-15 -2.333100495533795E-15 7.698530677018175E-14 5.770000910276431E-15 2.083736078441703E-14 -3.78542419117981E-16
q -2.333100495533795E-15 5.186593370268247E-15 -1.866960880543846E-13 -1.254872371093117E-14 -5.115211893825436E-14 8.421958578037209E-16
tp 7.698530677018175E-14 -1.866960880543846E-13 9.284340590924638E-10 4.300903236140246E-12 2.752654655592494E-10 -1.485525179052573E-13
node 5.770000910276431E-15 -1.254872371093117E-14 4.300903236140246E-12 1.332761853738322E-8 -1.331987396333073E-8 2.413990841917087E-11
peri 2.083736078441703E-14 -5.115211893825436E-14 2.752654655592494E-10 -1.331987396333073E-8 1.340174522697794E-8 -2.416876309627164E-11
i -3.78542419117981E-16 8.421958578037209E-16 -1.485525179052573E-13 2.413990841917087E-11 -2.416876309627164E-11 8.533998828600789E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO473764  
diameter diameter 8.196 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.5385 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2011) Minor Planet Bull. 38, 50-52.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.379   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.887   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.25, mean=2.72, max.=3.18) deg.
U-B UB 0.463   0.051 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.25, mean=2.72, max.=3.18) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

296 Phaetusa (A890 QB)          Discovered 1890-Aug-19 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A890 QB = 1930 YH = A917 XB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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