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JPL Small-Body Database Browser
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807 Ceraskia (A915 HF)
Classification: Main-belt Asteroid          SPK-ID: 2000807
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06511803156474384 2.7928e-08  
a 3.01626577514804 1.3102e-08 au
q 2.819852485194294 8.5933e-08 au
i 11.31972266342573 3.2685e-06 deg
node 132.2040666489675 1.9608e-05 deg
peri 337.2078003963412 3.6645e-05 deg
M 91.47465751312748 3.071e-05 deg
tp 2458514.315479120422
(2019-Jan-30.81547912)
0.00016297 TDB
period 1913.387076541175
5.24
1.2467e-05
3.413e-08
d
yr
n .1881480252551779 1.2259e-09 deg/d
Q 3.212679065101787 1.3955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2605  
   data-arc span      40530 days (110.97 yr)  
   first obs. used      1909-01-18  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44179  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:40:54  

Additional Information
 Earth MOID = 1.8396 au 
 Jupiter MOID = 1.86226 au 
 T_jup = 3.215 
[ 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 10.6   n/a MPO502160 IRAS observations used: 10
diameter diameter 21.241 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.368 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.207   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.845   0.053 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=3.84, mean=6.17, max.=8.32) deg.
U-B UB 0.447   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=3.84, mean=6.17, max.=8.32) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

807 Ceraskia (A915 HF)          Discovered 1915-Apr-18 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A915 HF = 1974 QB3 = A909 BK = A917 QA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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