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130 Elektra (A873 DA)
Classification: Main-belt Asteroid          SPK-ID: 2000130
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 117 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2091030306392345 2.0398e-08  
a 3.12615408530943 6.5346e-09 au
q 2.472465791826004 6.2265e-08 au
i 22.78100015932187 4.9581e-07 deg
node 145.0100336576458 1.0749e-06 deg
peri 237.5587523012931 3.1482e-06 deg
M 52.85337276555524 3.0791e-06 deg
tp 2458904.095902651913
(2020-Feb-24.59590265)
1.6808e-05 TDB
period 2018.896230494714
5.53
6.3302e-06
1.733e-08
d
yr
n .1783152569024238 5.591e-10 deg/d
Q 3.779842378792856 7.901e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3284  
   data-arc span      46494 days (127.29 yr)  
   first obs. used      1893-12-02  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40925  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:54:00  

Additional Information
 Earth MOID = 1.54071 au 
 Jupiter MOID = 1.90957 au 
 T_jup = 3.062 
[ 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 7.21   n/a E2020-QM5 IRAS observations used: 20
diameter diameter 180.652 km 2.698 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.225 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Debehogne, H.; Lagerkvist, C.-I.; Hahn, G. (1990) in Asteroids, Comets, Meteors III. C.-I. Lagerkvist, H. Rickman, B.A. Lindblad, M. Lindgren, eds. Uppsala, p. 45-48.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[Michalowski, T. (1993) Icarus 106, 563-572.]
[Danforth, C.W.; Ratcliff, S.J. (1994) Minor Planet Bull. 21, 1-3.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Shevchenko, V.G.; Chiorny, V.G.; Kalashnikov, A.V.; Krugly, Yu.N.; et al. (1996) Astron. Astrophys. Suppl. Ser. 115, 475-479.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Foerster, I.; Potthoff, H. (2001) Minor Planet Bull. 28, 25-26.]
[Durech, J.; Kaasalainen, M.; Marciniak, A.; et al. (2007) Astron. Astrophys. 465, 331-337.]
[Torppa, J.; Hentunen, V.-P.; Paakkonen, P.; Kehusmaa, P.; Muinonen, K. (2008) Icarus 198, 91-107.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Ferrero, A. (2013) Minor Planet Bull. 40, 31-32.]
[Garceran, A.C. (2013) Posting on CALL web site. http://www.MinorPlanet.info/call.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Marchis, M.; Viikinkoski, M.; Yang, B.; Kaasalainen, M. (2017) Astron. Astrophys. 599, A36.]
geometric albedo albedo 0.086   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.753   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=16; phase (min.=6.41, mean=16.24, max.=22.14) deg.
U-B UB 0.483   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=8.28, mean=16.87, max.=22.14) deg.
Tholen spectral type spec_T G   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

130 Elektra (A873 DA)          Discovered 1873-Feb-17 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1945-Feb-09 02:49 < 00:01 Jupiter 1.90350138939423 1.90350115865831 1.90350162013047 5.42306256644365 5.34037873299533 2431495.617600420 0.505966312228408 93.2048216968828 10.08367473259 -86.5159716468124 18210535.7043427 T 117 CATAB v2.0g-lin.ifort 2021-May-03 17:55:16 2021-May-03 17:55
2027-Jun-06 17:13 < 00:01 Jupiter 1.93696827437741 1.93696807814325 1.93696847061157 5.77180729595049 5.69553980085793 2461563.217164753 0.123240880679795 20.7745036667247 7.47762590551364 72.1037963255089 18424711.1200189 T 117 CATAB v2.0g-lin.ifort 2021-May-03 17:55:16 2021-May-03 17:55
2099-Apr-02 06:16 < 00:01 Jupiter 1.91475829758507 1.9147581035271 1.91475849164337 5.41145802509405 5.32908505094442 2487795.761291473 0.630543457568333 118.499969115743 9.11475772444094 -88.3637622899587 19265916.4741529 T 117 CATAB v2.0g-lin.ifort 2021-May-03 17:55:16 2021-May-03 17:55
2181-Jul-27 14:25 00:01 Jupiter 1.96197955907361 1.96197905496289 1.96198006319101 5.81327770923626 5.73853300877896 2517862.100896586 1.23333725764186 193.201472809835 7.76896642921417 83.0711844871677 17779023.5660952 T 117 CATAB v2.0g-lin.ifort 2021-May-03 17:55:16 2021-May-03 17:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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