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24694 (1990 SZ2)
Classification: Main-belt Asteroid          SPK-ID: 2024694
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1840087878432747 1.3284e-08  
a 2.601874930320717 1.0154e-08 au
q 2.123107078272597 3.2841e-08 au
i 14.48085968362823 3.6497e-07 deg
node 19.66547436478739 2.0115e-06 deg
peri 4.997411639543118 4.5861e-06 deg
M 109.2622254466586 4.1607e-06 deg
tp 2458931.240132191746
(2020-Mar-22.74013219)
1.6165e-05 TDB
period 1532.950218854376
4.20
8.9736e-06
2.457e-08
d
yr
n .2348412854978681 1.3747e-09 deg/d
Q 3.080642782368837 1.2022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2527  
   data-arc span      16021 days (43.86 yr)  
   first obs. used      1977-08-10  
   last obs. used      2021-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4483  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:28:30  

Additional Information
 Earth MOID = 1.12623 au 
 Jupiter MOID = 2.38503 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457722.5 (2016-Nov-30.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1852863304483692 1.3321e-08  
q 2.118398774499913 3.2883e-08 au
tp 2457395.073685422031
(2016-Jan-07.57368542)
1.3474e-05 TDB
node 19.76003192983567 2.0074e-06 deg
peri 4.183302880395913 4.527e-06 deg
i 14.50878656076948 3.6565e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2527  
   data-arc span      16021 days (43.86 yr)  
   first obs. used      1977-08-10  
   last obs. used      2021-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4483  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:28:30  

Additional Information
 Jupiter MOID = 2.38503 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.774562780379794E-16 -4.2571683379045E-16 1.420244399508269E-14 6.888063616519443E-15 8.53659061549025E-15 1.391732688046795E-15
q -4.2571683379045E-16 1.081297261624613E-15 -4.083983180610255E-14 -1.71465465960374E-14 -2.334495324031408E-14 -3.611816537251807E-15
tp 1.420244399508269E-14 -4.083983180610255E-14 1.815501324676572E-10 3.84133302853957E-13 5.503235027136522E-11 -2.08036664716058E-12
node 6.888063616519443E-15 -1.71465465960374E-14 3.84133302853957E-13 4.029545122597442E-12 -3.188061407435656E-12 5.946336988337032E-14
peri 8.53659061549025E-15 -2.334495324031408E-14 5.503235027136522E-11 -3.188061407435656E-12 2.049417263157988E-11 -6.896532586413122E-13
i 1.391732688046795E-15 -3.611816537251807E-15 -2.08036664716058E-12 5.946336988337032E-14 -6.896532586413122E-13 1.337001671612991E-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 13.37   n/a MPCxxxxx  
diameter diameter 5.857 km 0.725 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.296   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24694 (1990 SZ2)          Discovered 1990-Sep-18 by Holt, H. E. at Palomar
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 SZ2 = 1977 PH2 = 1990 SB29 = 1990 ST26 = 1990 UM12 = 2001 FV25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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