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1545 Thernoe (1941 UW)
Classification: Main-belt Asteroid          SPK-ID: 2001545
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2382457761801904 1.9125e-08  
a 2.770641622920064 7.4972e-09 au
q 2.110547958950331 5.4209e-08 au
i 2.95340733680136 1.0353e-06 deg
node 51.79862278171484 3.9173e-06 deg
peri 90.29897025195827 4.7776e-06 deg
M 341.8070837983012 3.463e-06 deg
tp 2459285.627283853558
(2021-Mar-12.12728385)
1.6331e-05 TDB
period 1684.492021373648
4.61
6.8372e-06
1.872e-08
d
yr
n .2137142802887436 8.6745e-10 deg/d
Q 3.430735286889798 9.2834e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3062  
   data-arc span      41997 days (114.98 yr)  
   first obs. used      1906-03-21  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:35:55  

Additional Information
 Earth MOID = 1.12569 au 
 Jupiter MOID = 1.60028 au 
 T_jup = 3.294 
[ show covariance matrix ]

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 11.88   n/a E2021B10  
diameter diameter 18.656 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 17.20 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.]
geometric albedo albedo 0.097   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B K   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1545 Thernoe (1941 UW)          Discovered 1941-Oct-15 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 UW = 1932 YD = 1955 VV = 1957 HY = A906 FE = A915 CE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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