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913 Otila (A919 KD)
Classification: Main-belt Asteroid          SPK-ID: 2000913
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708739110456761 1.2334e-08  
a 2.196969058226606 4.4424e-09 au
q 1.82156436280109 2.847e-08 au
i 5.805256903955801 1.243e-07 deg
node 94.92082010710455 2.151e-06 deg
peri 188.5288396752361 4.552e-06 deg
M 89.39250655823815 5.3505e-06 deg
tp 2459101.152736189945
(2020-Sep-08.65273619)
1.7453e-05 TDB
period 1189.417536942544
3.26
3.6076e-06
9.877e-09
d
yr
n .3026691542865576 9.1801e-10 deg/d
Q 2.572373753652122 5.2014e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3410  
   data-arc span      40962 days (112.15 yr)  
   first obs. used      1909-04-22  
   last obs. used      2021-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:42:55  

Additional Information
 Earth MOID = .805078 au 
 Jupiter MOID = 2.56472 au 
 T_jup = 3.642 
[ 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 12.05   n/a E2021B10  
diameter diameter 11.636 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.8720 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Oey, J.; Krajewski, R. (2008) Minor Planet Bull. 35, 47-48.]
[Schiller, Q. (2008) Minor Planet Bull. 35, 41.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Franco, L.; Marchini, A.; Scarfi, G.; Papini, R.; et al. (2020) Minor Planet Bull. 47, 270-272.]
geometric albedo albedo 0.282   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Sa   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)

913 Otila (A919 KD)          Discovered 1919-May-19 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A919 KD = 1935 ES = 1942 NB = 1955 LB = A909 HD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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