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470 Kilia (A901 HC)
Classification: Main-belt Asteroid          SPK-ID: 2000470
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09386886649005664 3.577e-08  
a 2.404641100925093 6.6789e-09 au
q 2.178920166465852 8.6998e-08 au
i 7.227152713182755 3.8039e-06 deg
node 173.2251931909254 2.9833e-05 deg
peri 47.39629571409156 3.5908e-05 deg
M 328.9467599982609 2.1775e-05 deg
tp 2459117.983870223078
(2020-Sep-25.48387022)
8.2534e-05 TDB
period 1361.98970793191
3.73
5.6744e-06
1.554e-08
d
yr
n .2643191779669435 1.1012e-09 deg/d
Q 2.630362035384334 7.3059e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3008  
   data-arc span      43388 days (118.79 yr)  
   first obs. used      1901-04-21  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43304  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:28:09  

Additional Information
 Earth MOID = 1.17923 au 
 Jupiter MOID = 2.34464 au 
 T_jup = 3.507 
[ 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 10.0   n/a MPO502157 IRAS observations used: 28
diameter diameter 27.750 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 290. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2009) Minor Planet Bull. 36, 157-158.]
geometric albedo albedo 0.148   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.886   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=10.08, mean=10.64, max.=11.20) deg.
U-B UB 0.466   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=10.08, mean=10.64, max.=11.20) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   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)

470 Kilia (A901 HC)          Discovered 1901-Apr-21 by Carnera, L. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A901 HC = 1932 TA = A902 RB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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