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1234 Elyna (1931 UF)
Classification: Main-belt Asteroid          SPK-ID: 2001234
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08652073098386964 1.0754e-08  
a 3.013112178977511 1.0938e-08 au
q 2.752415510715976 3.2776e-08 au
i 8.529285877506229 4.1875e-07 deg
node 304.3514937757294 4.7944e-06 deg
peri 90.00171907506481 1.5761e-05 deg
M 11.93343408476279 1.3027e-05 deg
tp 2459137.173670545524
(2020-Oct-14.67367055)
6.9159e-05 TDB
period 1910.38710581393
5.23
1.0403e-05
2.848e-08
d
yr
n .1884434829487714 1.0262e-09 deg/d
Q 3.273808847239045 1.1885e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3140  
   data-arc span      32664 days (89.43 yr)  
   first obs. used      1931-10-18  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39679  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:18:46  

Additional Information
 Earth MOID = 1.77464 au 
 Jupiter MOID = 2.10698 au 
 T_jup = 3.226 
[ 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 10.85   n/a E2021B10  
diameter diameter 22.876 km 0.465 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.4221 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Aznar, A.M.; Carreno Garcerain, A.; Arce Masego, E.; Brines Rodriques, P.; et al. (2016) Minor Planet Bull. 43, 257-263.]
geometric albedo albedo 0.162   0.031 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)

1234 Elyna (1931 UF)          Discovered 1931-Oct-18 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1931 UF = 1933 BN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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