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242 Kriemhild (A884 SA)
Classification: Main-belt Asteroid          SPK-ID: 2000242
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .121666573453178 3.4846e-08  
a 2.861050859581358 9.8245e-09 au
q 2.512956605020825 1.0128e-07 au
i 11.35143179879021 4.1384e-06 deg
node 206.9095943730566 1.9065e-05 deg
peri 279.3236689932008 2.5281e-05 deg
M 276.3860815422888 1.7228e-05 deg
tp 2459411.046987618595
(2021-Jul-15.54698762)
8.5029e-05 TDB
period 1767.611400934934
4.84
9.1047e-06
2.493e-08
d
yr
n .2036646741526938 1.049e-09 deg/d
Q 3.209145114141891 1.102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3232  
   data-arc span      49619 days (135.85 yr)  
   first obs. used      1885-01-09  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41387  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:02  

Additional Information
 Earth MOID = 1.55813 au 
 Jupiter MOID = 1.95914 au 
 T_jup = 3.262 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456294.5 (2013-Jan-02.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119078324145712 3.4994e-08  
q 2.522321037353291 1.015e-07 au
tp 2455873.021989233664
(2011-Nov-07.52198923)
8.5081e-05 TDB
node 206.9684430262587 1.9052e-05 deg
peri 279.3295788276793 2.5492e-05 deg
i 11.34950169209679 4.1395e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3232  
   data-arc span      49619 days (135.85 yr)  
   first obs. used      1885-01-09  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41387  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:02  

Additional Information
 Jupiter MOID = 1.95914 au 
 T_jup = 3.262 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.224611589975136E-15 -3.539105375603103E-15 1.883594199952927E-13 -1.224354619713936E-15 5.894253902025981E-14 6.043987851455122E-16
q -3.539105375603103E-15 1.030325085297848E-14 -5.507041711917335E-13 5.865875273928424E-15 -1.724242010543055E-13 -1.580546697282742E-15
tp 1.883594199952927E-13 -5.507041711917335E-13 7.238771040436508E-9 -4.324971775586596E-12 1.459167467708743E-9 -2.464142250048705E-12
node -1.224354619713936E-15 5.865875273928424E-15 -4.324971775586596E-12 3.629830908514358E-10 -3.560492833189067E-10 -5.957247985282413E-12
peri 5.894253902025981E-14 -1.724242010543055E-13 1.459167467708743E-9 -3.560492833189067E-10 6.498618127280998E-10 5.378418930025565E-12
i 6.043987851455122E-16 -1.580546697282742E-15 -2.464142250048705E-12 -5.957247985282413E-12 5.378418930025565E-12 1.713522977480591E-11

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 9.3   n/a MPO347512  
diameter diameter 40.802 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.5478 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2005) Minor Planet Bull. 32, 4-7.]
[Bembrick, C.; Crawford, G.; Oey, J.; Allen, B. (2007) Minor Planet Bull. 34, 67-68.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.]
[Fauerbach, M.; Bennett, T.; Marks, S.A. (2007) Minor Planet Bull. 34, 57-58.]
[Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bull. 35, 44-46.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Aznar, A.M. (2017) Minor Planet Bull. 44, 276-279.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.222   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Xc   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)

242 Kriemhild (A884 SA)          Discovered 1884-Sep-22 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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