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1117 Reginita (1927 KA)
Classification: Main-belt Asteroid          SPK-ID: 2001117
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.

Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980585196061447 1.1727e-08  
a 2.247531572152353 4.0342e-09 au
q 1.802388796203787 2.6281e-08 au
i 4.344708034336612 6.1204e-07 deg
node 147.0997614982377 1.212e-05 deg
peri 151.1885863887347 1.2603e-05 deg
M 293.8132323888253 4.2019e-06 deg
tp 2459622.769386690287
1.4611e-05 TDB
period 1230.713965169535
n .2925131348049738 7.8756e-10 deg/d
Q 2.692674348100919 4.8332e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3770  
   data-arc span      42666 days (116.81 yr)  
   first obs. used      1904-10-09  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40062  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:21:02  

Additional Information
 Earth MOID = .787738 au 
 Jupiter MOID = 2.52435 au 
 T_jup = 3.600 
[ 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 11.81   n/a MPO636078  
diameter diameter 10.193 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 2.946 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Behrend, R. (2007) Observatoire de Geneve web site,]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Tan, H.; Li, B.; Gao, X. (2017) Minor Planet Bull. 44, 307.]
[Franco, L.; Marchini, A.; Baj, G.; Scarfi, G.; et al. (2018) Minor Planet Bull. 45, 399-400.]
[Franco, L.; Marchini, A.; Galdies, C; Brincat, S.M.; Grech, W. (2019) Minor Planet Bull. 46, 269-271.]
[Galdies, C.; Brincat, S.M.; Grech, W. (2019) Minor Planet Bull. 46, 61-62.]
geometric albedo albedo 0.293   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

1117 Reginita (1927 KA)          Discovered 1927-May-24 by Comas Sola, J. at Barcelona
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1927 KA = A904 TA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2021-Sep-25 05:56 UT
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