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JPL Small-Body Database Browser
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46554 (1990 SZ8)
Classification: Main-belt Asteroid          SPK-ID: 2046554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1509037145424635 5.2142e-08  
a 2.969424816089912 2.263e-08 au
q 2.521327581287373 1.5024e-07 au
i 8.204179606767397 5.6822e-06 deg
node 32.93672453578546 3.0189e-05 deg
peri 289.7498369030626 3.7715e-05 deg
M 234.7152166275106 2.7278e-05 deg
tp 2459250.933278234603
(2021-Feb-05.43327823)
0.0001454 TDB
period 1868.989783605868
5.12
2.1365e-05
5.849e-08
d
yr
n .1926174252838595 2.2019e-09 deg/d
Q 3.417522050892451 2.6045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      960  
   data-arc span      10456 days (28.63 yr)  
   first obs. used      1990-09-14  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52034  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:38:12  

Additional Information
 Earth MOID = 1.52351 au 
 Jupiter MOID = 1.97935 au 
 T_jup = 3.231 
[ show covariance matrix ]

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 14.3   n/a MPO436107  
diameter diameter 3.764 km 0.469 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.286   0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46554 (1990 SZ8)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1930-Jun-13 20:05 00:03 Jupiter 1.980573401 1.98057279858686 1.98057400341292 2.87924167662174 2.72666500221714 2426141.336670240 3.08743681861449 75.9952474881525 11.3443876735251 -76.7140932588376 1472212.639865 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 02:38:15 2019-Jul-13 02:38
1966-Aug-26 23:02 00:02 Jupiter 1.97315010593676 1.9731496164784 1.97315059539524 2.36348680276517 2.17428640779403 2439364.459554529 1.80065179468078 72.9455106433929 4.19006296044792 -71.2692989802611 2475487.54768665 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 02:38:15 2019-Jul-13 02:38
2002-Nov-10 02:16 < 00:01 Jupiter 1.97896903654463 1.97896850722331 1.97896956586595 2.2076170420934 2.00438244449091 2452588.594172369 0.47802099311853 60.503612342297 8.42250664226982 -74.2638772653237 2551069.02031275 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 02:38:15 2019-Jul-13 02:38
2156-May-02 16:27 00:05 Jupiter 1.99149761686469 1.99149700450065 1.99149822922874 2.49183522018562 2.31486587527065 2508645.185082897 5.23978320547988 130.318219591711 7.06292113855885 -74.1399037643894 1847206.14169165 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 02:38:15 2019-Jul-13 02:38
2192-Jul-17 16:52 00:07 Jupiter 1.98345227397497 1.98345178247642 1.9834527654734 2.26065612321115 2.06312311196446 2521870.202683129 6.59330528911279 178.865721831072 15.6741599541877 -86.6578208470575 2889402.46683849 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 02:38:15 2019-Jul-13 02:38

Alternate Designations
 1990 SZ8 = 2001 YY121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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