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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597225233785383 7.5065e-09  
a 2.228749236524024 3.853e-09 au
q 1.872767784488416 1.7671e-08 au
i 1.747957935109256 4.9726e-07 deg
node 121.5646233682999 2.3305e-05 deg
peri 252.5090845070748 2.4333e-05 deg
M 26.5593247222838 5.7013e-06 deg
tp 2459110.838754794059
(2020-Sep-18.33875479)
1.9219e-05 TDB
period 1215.318861140199
3.33
3.1515e-06
8.628e-09
d
yr
n .296218557541559 7.6813e-10 deg/d
Q 2.584730688559631 4.4684e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3312  
   data-arc span      36712 days (100.51 yr)  
   first obs. used      1920-09-07  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:39:35  

Additional Information
 Earth MOID = .872823 au 
 Jupiter MOID = 2.87937 au 
 T_jup = 3.626 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456927.5 (2014-Sep-27.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597659988951332 7.5124e-09  
q 1.873141769154408 1.7693e-08 au
tp 2456679.988612620485
(2014-Jan-22.48861262)
1.9564e-05 TDB
node 121.5807791734191 2.3308e-05 deg
peri 252.573683399279 2.4335e-05 deg
i 1.747067453549346 4.9793e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3312  
   data-arc span      36712 days (100.51 yr)  
   first obs. used      1920-09-07  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:39:35  

Additional Information
 Jupiter MOID = 2.87937 au 
 T_jup = 3.626 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.643668657832236E-17 -1.307379112077624E-16 2.813113886400397E-14 3.272413915967355E-14 -2.584183830631628E-14 2.780829353388108E-16
q -1.307379112077624E-16 3.130376622565244E-16 -7.67762165636479E-14 -6.990184984886134E-14 5.227674631937006E-14 -6.394217279015428E-16
tp 2.813113886400397E-14 -7.67762165636479E-14 3.827414703170356E-10 -5.483853065320536E-11 1.508557257256424E-10 9.384990195978348E-13
node 3.272413915967355E-14 -6.990184984886134E-14 -5.483853065320536E-11 5.432733944232574E-10 -5.554358454304657E-10 -7.220284293308745E-12
peri -2.584183830631628E-14 5.227674631937006E-14 1.508557257256424E-10 -5.554358454304657E-10 5.922124278911578E-10 7.398846530624163E-12
i 2.780829353388108E-16 -6.394217279015428E-16 9.384990195978348E-13 -7.220284293308745E-12 7.398846530624163E-12 2.4793351576834E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.61   n/a E2021B10  
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. 2020-October); 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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