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JPL Small-Body Database Browser
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804 Hispania (A915 FK)
Classification: Main-belt Asteroid          SPK-ID: 2000804
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402005760798394 4.3937e-08  
a 2.838684390254678 1.0644e-08 au
q 2.440699203432124 1.2454e-07 au
i 15.39302293840606 4.7588e-06 deg
node 347.5935268455921 1.666e-05 deg
peri 344.6525978784246 2.3017e-05 deg
M 123.6292762265105 1.7388e-05 deg
tp 2458000.580584795849
(2017-Sep-04.08058480)
8.369e-05 TDB
period 1746.924321370267
4.78
9.8256e-06
2.69e-08
d
yr
n .2060764714281499 1.1591e-09 deg/d
Q 3.236669577077232 1.2136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2365  
   data-arc span      40982 days (112.20 yr)  
   first obs. used      1907-09-24  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46999  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:48:47  

Additional Information
 Earth MOID = 1.43355 au 
 Jupiter MOID = 2.16529 au 
 T_jup = 3.243 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.9   n/a MPO502160 IRAS observations used: 16
magnitude slope G 0.18   n/a PDS3 (MPC 17260) Fit
diameter diameter 137.952 km 1.964 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 14.845 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pray, D. (2004) Minor Planet Bull. 31, 34-36.]
[Stephens, R.D. (2004) Minor Planet Bull. 31, 40-41.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2014) Minor Planet Bull. 41, 92-95.]
geometric albedo albedo 0.054   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.727   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=.89, mean=6.11, max.=15.07) deg.
U-B UB 0.390   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=.89, mean=6.11, max.=15.07) deg.
Tholen spectral type spec_T PC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

804 Hispania (A915 FK)          Discovered 1915-Mar-20 by Comas Sola, J. at Barcelona
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A915 FK = 1953 FU1 = A903 WA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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