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398 Admete (A894 YB)
Classification: Main-belt Asteroid          SPK-ID: 2000398
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2234339015198809 2.2557e-08  
a 2.737469558339966 8.1432e-09 au
q 2.125826054628162 6.4693e-08 au
i 9.554308833456879 1.3085e-06 deg
node 279.8194875036195 4.214e-06 deg
peri 160.4934302541573 5.6361e-06 deg
M 300.2137742334885 7.1401e-06 deg
tp 2459475.239441735733
(2021-Sep-17.73944174)
3.3561e-05 TDB
period 1654.330872317161
4.53
7.3817e-06
2.021e-08
d
yr
n .2176106400624447 9.7099e-10 deg/d
Q 3.34911306205177 9.9626e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2819  
   data-arc span      46061 days (126.11 yr)  
   first obs. used      1894-12-29  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3983  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:20:48  

Additional Information
 Earth MOID = 1.14398 au 
 Jupiter MOID = 1.91015 au 
 T_jup = 3.295 
[ 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 10.39   n/a E2021B10  
diameter diameter 49.771 km 0.694 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 20.998 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2017) Minor Planet Bull. 44, 112-114.]
geometric albedo albedo 0.054   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
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)

398 Admete (A894 YB)          Discovered 1894-Dec-28 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A894 YB = 1951 LP = 1952 QC1 = A907 RE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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