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101256 (1998 SA95)
Classification: Main-belt Asteroid          SPK-ID: 2101256
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2577048082021084 3.2044e-08  
a 2.622247355555829 1.2109e-08 au
q 1.946481603733828 8.2041e-08 au
i 6.191363181653095 4.7179e-06 deg
node 43.41373153106323 4.6935e-05 deg
peri 227.5125724949427 4.8207e-05 deg
M 97.76485228914592 1.1341e-05 deg
tp 2458579.299227803210
(2019-Apr-05.79922780)
4.8435e-05 TDB
period 1550.98969047058
4.25
1.0744e-05
2.942e-08
d
yr
n .2321098600537917 1.6078e-09 deg/d
Q 3.29801310737783 1.523e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8083 days (22.13 yr)  
   first obs. used      1998-09-24  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:29  

Additional Information
 Earth MOID = .936923 au 
 Jupiter MOID = 1.84225 au 
 T_jup = 3.348 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457379.5 (2015-Dec-23.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2573310242340168 3.1986e-08  
q 1.948027928063373 8.1935e-08 au
tp 2457028.762209251752
(2015-Jan-06.26220925)
4.8723e-05 TDB
node 43.41934794328665 4.6915e-05 deg
peri 227.664377553002 4.8194e-05 deg
i 6.192390681650735 4.7198e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8083 days (22.13 yr)  
   first obs. used      1998-09-24  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:29  

Additional Information
 Jupiter MOID = 1.84225 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.023126774946379E-15 -2.605886950300853E-15 3.455732028204248E-13 1.388163559003446E-14 4.267945985487573E-14 -2.798423885259135E-15
q -2.605886950300853E-15 6.713331125082504E-15 -9.610502353930698E-13 -4.131218202544897E-14 -1.202713296648468E-13 7.770174372421296E-15
tp 3.455732028204248E-13 -9.610502353930698E-13 2.373907907845284E-9 5.385758424717885E-11 5.658230901933409E-10 -8.740003146507776E-12
node 1.388163559003446E-14 -4.131218202544897E-14 5.385758424717885E-11 2.2009994501083E-9 -2.175641022748967E-9 -1.177732948938779E-10
peri 4.267945985487573E-14 -1.202713296648468E-13 5.658230901933409E-10 -2.175641022748967E-9 2.322676223600312E-9 1.150199032277377E-10
i -2.798423885259135E-15 7.770174372421296E-15 -8.740003146507776E-12 -1.177732948938779E-10 1.150199032277377E-10 2.227658122593082E-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 15.2   n/a MPO502725  
diameter diameter 2.802 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.60 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Molnar, L.; Pal, A.; Sarneczky, K.; Szabo, R.; et al. (2018) Ap. J. Supp. Ser. 234, A37.]
geometric albedo albedo 0.225   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101256 (1998 SA95)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 SA95 = 2002 QU8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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