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97 Klotho (A868 DB)
Classification: Main-belt Asteroid          SPK-ID: 2000097
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2574682551657536 8.6991e-09  
a 2.66814327799709 4.0989e-09 au
q 1.981181083678945 2.2901e-08 au
i 11.77925535322097 1.508e-06 deg
node 159.6198681312615 1.7028e-06 deg
peri 268.594210731039 6.1236e-06 deg
M 131.0431706773358 5.3192e-06 deg
tp 2458817.039229435916
(2019-Nov-29.53922944)
2.3401e-05 TDB
period 1591.886676160448
4.36
3.6683e-06
1.004e-08
d
yr
n .2261467511420488 5.2112e-10 deg/d
Q 3.355105472315235 5.1542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3434  
   data-arc span      55168 days (151.04 yr)  
   first obs. used      1870-07-23  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:11:53  

Additional Information
 Earth MOID = 1.03542 au 
 Jupiter MOID = 2.12305 au 
 T_jup = 3.305 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457180.5 (2015-Jun-07.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2544636348778024 8.7531e-09  
q 1.990735227852487 2.3045e-08 au
tp 2457223.378789427645
(2015-Jul-19.87878943)
2.413e-05 TDB
node 159.7068005078762 1.695e-06 deg
peri 268.5854617944748 6.2294e-06 deg
i 11.78393194852797 1.5093e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3434  
   data-arc span      55168 days (151.04 yr)  
   first obs. used      1870-07-23  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46155  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:11:53  

Additional Information
 Jupiter MOID = 2.12305 au 
 T_jup = 3.305 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.661642327220555E-17 -1.999504343673347E-16 7.262746911997361E-14 -1.840404946710801E-15 1.787753078663751E-14 3.167213082036238E-15
q -1.999504343673347E-16 5.310542824823086E-16 -2.021607563723765E-13 4.060106118426816E-15 -4.99876647877459E-14 -8.287168406394603E-15
tp 7.262746911997361E-14 -2.021607563723765E-13 5.822714800080682E-10 2.671462106852659E-12 1.466779340144239E-10 -8.5464051630332E-12
node -1.840404946710801E-15 4.060106118426816E-15 2.671462106852659E-12 2.872979155535014E-12 -9.798620028260353E-13 -1.0850255367673E-12
peri 1.787753078663751E-14 -4.99876647877459E-14 1.466779340144239E-10 -9.798620028260353E-13 3.88051372465977E-11 -1.164718050043813E-12
i 3.167213082036238E-15 -8.287168406394603E-15 -8.5464051630332E-12 -1.0850255367673E-12 -1.164718050043813E-12 2.278037023640756E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.82   n/a MPCxxxxx IRAS observations used: 18
diameter diameter 100.717 km 0.641 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 35.15 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Lagerkvist, C.I.; Magnusson, P.; Williams, I.P.; Buontempo, M.E.; et al. (1988) Astron. Astrophys. Suppl. Ser. 73, 395-405.]
[Lagerkvist, C.-I.; Erikson, A.; Debehogne, H.; Festin, L.; et al. (1995) Astron. Astrophys. Suppl. Ser. 113, 115-129.]
[Piironen, J.; Magnusson, P.; Lagerkvist, C.-I.; Williams, I.P.; et al. (1997) Astron. Astrophys. Suppl. Ser. 121, 489-497.]
[Lagerkvist, C.-I.; Bel'skaya, I.; Erikson, A.; Schevchenko, V.; et al. (1998) Astron. Astrophys. Suppl. Ser. 131, 55-62.]
[Tungalag, N.; Shevchenko, V.G.; Lupishko, D.F. (2002) Kin. Fiz. Neb. Tel 18, 508-516; Kinematics and Physics of Celestial Bodies 18, ???-???.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.128   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
B-V BV 0.716   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.26, mean=18.39, max.=23.78) deg.
U-B UB 0.226   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=16.72, mean=20.93, max.=23.78) deg.
Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

97 Klotho (A868 DB)          Discovered 1868-Feb-17 by Tempel, E. W. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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