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4006 Sandler (1972 YR)
Classification: Main-belt Asteroid          SPK-ID: 2004006
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 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839518036451319 1.2844e-08  
a 2.51537793836681 6.5804e-09 au
q 2.052669629755062 3.3322e-08 au
i 2.39132558399726 7.6332e-07 deg
node 293.7003757620423 9.5462e-06 deg
peri 124.2243456418469 8.0416e-06 deg
M 88.70804440003525 5.5974e-06 deg
tp 2459037.442665464205
(2020-Jul-06.94266546)
2.2344e-05 TDB
period 1457.146770702959
3.99
5.718e-06
1.566e-08
d
yr
n .2470581599864015 9.6949e-10 deg/d
Q 2.978086246978558 7.7909e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3405  
   data-arc span      20604 days (56.41 yr)  
   first obs. used      1965-01-09  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41896  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:53:42  

Additional Information
 Earth MOID = 1.06566 au 
 Jupiter MOID = 2.36661 au 
 T_jup = 3.434 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457132.5 (2015-Apr-20.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1834476297589265 1.2715e-08  
q 2.054129712710282 3.289e-08 au
tp 2457576.048200079152
(2016-Jul-06.54820008)
2.2047e-05 TDB
node 293.9858086264048 9.555e-06 deg
peri 123.1545986355562 8.0448e-06 deg
i 2.386661869370013 7.6316e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3405  
   data-arc span      20604 days (56.41 yr)  
   first obs. used      1965-01-09  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41896  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:53:42  

Additional Information
 Jupiter MOID = 2.36661 au 
 T_jup = 3.434 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.61675749645633E-16 -4.127140888361228E-16 -1.052855026282591E-14 3.921183135946953E-14 -2.743332817129158E-14 1.760175114928765E-15
q -4.127140888361228E-16 1.081776649764864E-15 2.109044148011278E-14 -9.916874759515452E-14 6.593809779798347E-14 -4.432419139916959E-15
tp -1.052855026282591E-14 2.109044148011278E-14 4.86053649365078E-10 9.681671941832753E-11 1.597264197887545E-11 7.549189634690064E-12
node 3.921183135946953E-14 -9.916874759515452E-14 9.681671941832753E-11 9.129857427010788E-11 -6.393215454518892E-11 5.738436237553672E-12
peri -2.743332817129158E-14 6.593809779798347E-14 1.597264197887545E-11 -6.393215454518892E-11 6.471817276736284E-11 -3.554798710256007E-12
i 1.760175114928765E-15 -4.432419139916959E-15 7.549189634690064E-12 5.738436237553672E-12 -3.554798710256007E-12 5.824194017433083E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.78   n/a MPCxxxxx  
diameter diameter 15.894 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.40 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Vonk, M.T.; Kopchinski, D.J.; Pittman, A.R.; Tauble, S. (2006) Minor Planet Bull. 33, 1.]
geometric albedo albedo 0.071   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4006 Sandler (1972 YR)          Discovered 1972-Dec-29 by Smirnova, T. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1972 YR = 1965 AW = 1969 AS = 1971 OO = 1973 AA1 = 1975 NC1 = 1979 OA14 = 1979 QH10 = 1981 AN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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