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JPL Small-Body Database Browser
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27 Euterpe
Classification: Main-belt Asteroid          SPK-ID: 2000027
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 109 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731309918892418 2.9023e-08  
a 2.346231773831625 2.7953e-09 au
q 1.940026339626101 6.7932e-08 au
i 1.583695708182407 2.9746e-06 deg
node 94.78724000814188 9.836e-05 deg
peri 356.3779320041325 9.8692e-05 deg
M 85.06235437674502 9.4856e-06 deg
tp 2458690.337211123019
(2019-Jul-25.83721112)
3.4367e-05 TDB
period 1312.667687296453
3.59
2.3459e-06
6.423e-09
d
yr
n .2742506755395568 4.9012e-10 deg/d
Q 2.75243720803715 3.2793e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2752  
   data-arc span      60716 days (166.23 yr)  
   first obs. used      1853-11-10  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5367  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:15:02  

Additional Information
 Earth MOID = .956641 au 
 Jupiter MOID = 2.43403 au 
 T_jup = 3.540 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.0   n/a PDS3 (MPC 17257)  
diameter diameter 96 km n/a Dunham occult. list: Dunham 1997; 124x75 km Yeomans E-mail 2001-Apr-04
rotation period rot_per 10.4082 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; Malcolm, G.; Koff, R.A.; Brincat, S.M.; Warner, B. (2001) Minor Planet Bull. 28, 1-2.]
[Stephens, R.D. (2001) Minor Planet Bull. 28, 5-6.]
[Gandolfi, D.; Cigna, M.; Fulvio, D.; Blanco, C. (2009) Planet. Space Sci. 57, 1-9.]
[Stephens, R.D. (2009) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2011) Minor Planet Bull. 38, 50-52.]
[Stephens, R.D.; Warner, B.D.; Megna, R.; Coley, D. (2012) Minor Planet Bull. 39, 2-5.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.215   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.878   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=5.92, mean=16.62, max.=26.21) deg.
U-B UB 0.502   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=14.71, mean=18.41, max.=26.21) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

27 Euterpe          Discovered 1853-Nov-08 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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