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643 Scheherezade (A907 RK)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000643
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0569014868562777 3.4138e-08  
a 3.361619313956683 1.6089e-08 au
q 3.170338176747768 1.1454e-07 au
i 13.7683297341261 3.9051e-06 deg
node 252.1757579827602 1.5483e-05 deg
peri 230.2339070146156 3.7104e-05 deg
M 26.96098937666082 3.3111e-05 deg
tp 2458831.901173759246
(2019-Dec-14.40117376)
0.0002071 TDB
period 2251.237022451913
6.16
1.6162e-05
4.425e-08
d
yr
n .1599120822950528 1.148e-09 deg/d
Q 3.552900451165599 1.7004e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2992  
   data-arc span      41184 days (112.76 yr)  
   first obs. used      1907-09-09  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41418  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:50  

Additional Information
 Earth MOID = 2.20626 au 
 Jupiter MOID = 1.73756 au 
 T_jup = 3.107 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456501.5 (2013-Jul-28.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06003393443785428 3.3905e-08  
q 3.1630661340762 1.1471e-07 au
tp 2456586.556104900679
(2013-Oct-21.05610490)
0.00019845 TDB
node 252.2436615352084 1.5461e-05 deg
peri 231.0540642911495 3.5598e-05 deg
i 13.77628564202998 3.9072e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2992  
   data-arc span      41184 days (112.76 yr)  
   first obs. used      1907-09-09  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41418  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:50  

Additional Information
 Jupiter MOID = 1.73756 au 
 T_jup = 3.107 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.149520926480648E-15 -3.855534048659305E-15 -3.357318769194293E-13 3.047010734147007E-15 -3.708543524678555E-14 7.552786397977701E-17
q -3.855534048659305E-15 1.31575142818237E-14 8.995297397468925E-13 -1.423325710405874E-14 8.676146531622988E-14 -1.86590118051201E-15
tp -3.357318769194293E-13 8.995297397468925E-13 3.938105066120298E-8 6.350290355509091E-12 6.378851165083529E-9 5.253554149314382E-12
node 3.047010734147007E-15 -1.423325710405874E-14 6.350290355509091E-12 2.390451884600481E-10 -2.314696952665978E-10 7.700284783306272E-13
peri -3.708543524678555E-14 8.676146531622988E-14 6.378851165083529E-9 -2.314696952665978E-10 1.267195605157123E-9 4.429924358215866E-14
i 7.552786397977701E-17 -1.86590118051201E-15 5.253554149314382E-12 7.700284783306272E-13 4.429924358215866E-14 1.52665577526763E-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 9.8   n/a MPO502159  
diameter diameter 64.997 km 0.382 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.161 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2006) Minor Planet Bull. 33, 35-39.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2018) Minor Planet Bull. 45, 50-54.]
geometric albedo albedo 0.058   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.719   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=9.21, mean=10.86, max.=15.29) deg.
U-B UB 0.302   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=9.21, mean=11.32, max.=15.29) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

643 Scheherezade (A907 RK)          Discovered 1907-Sep-08 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A907 RK = 1956 VG = A899 LC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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