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197 Arete (A879 KA)
Classification: Main-belt Asteroid          SPK-ID: 2000197
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1639954644938792 1.6912e-08  
a 2.73893348089127 6.3779e-09 au
q 2.289760812474669 4.7783e-08 au
i 8.791082294022235 6.2515e-07 deg
node 81.59108213997349 2.9717e-06 deg
peri 245.8614140238104 7.5977e-06 deg
M 8.916332962252218 4.9666e-06 deg
tp 2459159.493336787277
(2020-Nov-05.99333679)
2.2827e-05 TDB
period 1655.658084896308
4.53
5.7831e-06
1.583e-08
d
yr
n .2174361985026313 7.5949e-10 deg/d
Q 3.188106149307872 7.4239e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3438  
   data-arc span      51723 days (141.61 yr)  
   first obs. used      1879-05-29  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41632  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:28:23  

Additional Information
 Earth MOID = 1.29287 au 
 Jupiter MOID = 2.17496 au 
 T_jup = 3.314 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.47   n/a E2021B10 IRAS observations used: 16
diameter diameter 31.729 km 0.449 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.6084 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Di Martino, M.; Zappala, V.; De Campos, J.A.; Debehogne, H.; Lagerkvist, C.-I. (1987) Astron. Astrophys. Suppl. Ser. 67, 95-101.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.373   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.908   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.91 deg.
U-B UB 0.496   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.91 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 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)

197 Arete (A879 KA)          Discovered 1879-May-21 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A879 KA = 1934 RE1 = 1950 DY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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