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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1217512641701319 3.4077e-08  
a 2.861758869673183 9.4293e-09 au
q 2.513336109540385 9.9616e-08 au
i 11.35014599131569 3.9805e-06 deg
node 206.9070974522545 1.8467e-05 deg
peri 279.2246204006182 2.4615e-05 deg
M 317.2145144699678 1.6453e-05 deg
tp 2459410.656074238377
(2021-Jul-15.15607424)
8.096e-05 TDB
period 1768.267574589297
4.84
8.7395e-06
2.393e-08
d
yr
n .2035890976984151 1.0062e-09 deg/d
Q 3.210181629805981 1.0577e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3435  
   data-arc span      49683 days (136.02 yr)  
   first obs. used      1885-01-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40288  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:44:43  

Additional Information
 Earth MOID = 1.55847 au 
 Jupiter MOID = 1.95787 au 
 T_jup = 3.262 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456429.5 (2013-May-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1191350850716035 3.4219e-08  
q 2.522335492444859 9.9841e-08 au
tp 2455873.211711821967
(2011-Nov-07.71171182)
8.2404e-05 TDB
node 206.9660747564969 1.8454e-05 deg
peri 279.3715876134338 2.4825e-05 deg
i 11.34877389503927 3.9813e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3435  
   data-arc span      49683 days (136.02 yr)  
   first obs. used      1885-01-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40288  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:44:43  

Additional Information
 Jupiter MOID = 1.95787 au 
 T_jup = 3.262 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.170934588270336E-15 -3.404838204258273E-15 3.46019641767376E-14 6.017004238370325E-16 2.970543571056836E-14 1.994945493963681E-16
q -3.404838204258273E-15 9.968314228134962E-15 -1.629401926537979E-13 2.892087512304739E-16 -9.780376120148994E-14 -3.48106872530301E-16
tp 3.46019641767376E-14 -1.629401926537979E-13 6.790390301891451E-9 -1.030804805334522E-11 1.384743242144026E-9 -8.905987841605597E-13
node 6.017004238370325E-16 2.892087512304739E-16 -1.030804805334522E-11 3.405511519457174E-10 -3.352661434735572E-10 -6.346824691231337E-13
peri 2.970543571056836E-14 -9.780376120148994E-14 1.384743242144026E-9 -3.352661434735572E-10 6.162680813025487E-10 4.726322763154595E-13
i 1.994945493963681E-16 -3.48106872530301E-16 -8.905987841605597E-13 -6.346824691231337E-13 4.726322763154595E-13 1.585077045503515E-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 9.37   n/a E2021B10  
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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