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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 ]

[ show orbit diagram ]
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
(2022-Feb-12.26938669)
1.4611e-05 TDB
period 1230.713965169535
3.37
3.3136e-06
9.072e-09
d
yr
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456764.5 (2014-Apr-17.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1981633798143945 1.1685e-08  
q 1.802148538676919 2.6167e-08 au
tp 2457161.093551101222
(2015-May-18.59355110)
1.3228e-05 TDB
node 147.1375344161094 1.2119e-05 deg
peri 151.1844762247148 1.2604e-05 deg
i 4.344612124221288 6.1213e-07 deg
  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
 Jupiter MOID = 2.52435 au 
 T_jup = 3.600 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.365437327953656E-16 -3.034596897762262E-16 -3.67487980287984E-14 -5.782496265943857E-15 -1.600165150863918E-14 -2.647355638975976E-16
q -3.034596897762262E-16 6.847076642721415E-16 8.080740783676949E-14 1.303059167481169E-14 3.506541508189112E-14 6.412834453507534E-16
tp -3.67487980287984E-14 8.080740783676949E-14 1.749930167679109E-10 1.899508552022981E-11 4.747072834439221E-11 -3.989252983995254E-13
node -5.782496265943857E-15 1.303059167481169E-14 1.899508552022981E-11 1.468710362879626E-10 -1.396471380541088E-10 6.574094112611315E-13
peri -1.600165150863918E-14 3.506541508189112E-14 4.747072834439221E-11 -1.396471380541088E-10 1.588495176459984E-10 -8.609061477130464E-13
i -2.647355638975976E-16 6.412834453507534E-16 -3.989252983995254E-13 6.574094112611315E-13 -8.609061477130464E-13 3.746998281258293E-13

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] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
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, http://obswww.unige.ch/~behrend/page_cou.html]
[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] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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 ]
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