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295557 (2008 SQ54)
Classification: Main-belt Asteroid          SPK-ID: 2295557
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865570315368376 5.7075e-08  
a 3.056579539865893 4.2643e-08 au
q 2.486353134252279 1.6653e-07 au
i .5604586096427416 6.9635e-06 deg
node 191.2544611998006 0.00054602 deg
peri 119.2700448343196 0.00054631 deg
M 112.5801273912507 2.256e-05 deg
tp 2458390.104652928703
(2018-Sep-28.60465293)
0.00011407 TDB
period 1951.874900460846
5.34
4.0846e-05
1.118e-07
d
yr
n .1844380497515504 3.8597e-09 deg/d
Q 3.626805945479507 5.0598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      238  
   data-arc span      6810 days (18.64 yr)  
   first obs. used      2001-03-28  
   last obs. used      2019-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55777  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:31:02  

Additional Information
 Earth MOID = 1.47201 au 
 Jupiter MOID = 1.65134 au 
 T_jup = 3.208 
[ 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 15.8   n/a MPO455185  

295557 (2008 SQ54)          Discovered 2008-Sep-20 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ 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
1920-Jan-28 19:18 00:06 Jupiter 1.70053029897787 1.70052791193548 1.70053268600558 1.38099548841912 0.954443404580493 2422352.304427598 6.29264989538037 505.38127027414 184.286900814547 -8.35127166851181 545326.861475573 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
1929-Jun-21 00:06 00:06 Jupiter 1.88497664990427 1.88497376219157 1.88497953761998 2.82492024693225 2.66110233539228 2425783.503944972 5.59159913111925 209.015523904766 20.586989686046 -72.0794693031985 1241619.16279912 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
1968-Sep-10 07:24 00:03 Jupiter 1.96906486741755 1.96906277091143 1.969066963922 2.20821649890225 2.00396865823666 2440109.808451555 3.02387184609837 121.241738630462 12.5287699389372 -83.1818200497714 898790.989915743 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
1978-Feb-08 22:36 00:02 Jupiter 1.66725714038544 1.66725648420353 1.6672577965663 1.57257276905455 1.20702861255731 2443548.441558801 2.48856014333371 164.457408412534 89.7694611270254 -23.1793331753663 1192457.13528488 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2026-Sep-22 14:01 < 00:01 Jupiter 1.67838812150377 1.67838757588222 1.6783886671296 1.32805543134091 0.868563578029285 2461306.084174972 0.816713345774816 366.120666116628 166.947410943846 -34.2400990991872 1780705.64120258 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2036-Feb-17 06:30 00:01 Jupiter 1.94415148476927 1.94415063599118 1.94415233354735 3.14631067831557 3.00464913804736 2464740.770707120 1.39954822339793 72.9261436850631 22.6883893130588 -76.7020699996958 1795049.88822295 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2075-May-07 00:22 00:04 Jupiter 1.91582050524659 1.91581880077663 1.91582220971665 1.99827133082394 1.76319266093733 2479064.515454170 3.91562837677839 161.263979327427 18.157678826205 87.6181334357981 1073668.97912037 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2084-Oct-03 04:51 00:05 Jupiter 1.70341505530236 1.70341363892205 1.70341647167772 1.73845522092855 1.42398289443369 2482501.701786537 4.65878672327766 162.674943346913 82.0997638972773 -6.20374092759625 570569.258709956 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2133-May-19 09:36 00:08 Jupiter 1.66338894881611 1.66338788847705 1.66339000916056 1.30185728844514 0.822436930712616 2500260.899755959 7.76868391482962 485.940500111609 296.848726375031 -59.5920906936153 1382190.69705376 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2142-Oct-18 05:00 00:08 Jupiter 1.99738708871416 1.99738318776811 1.99739098967316 3.46518314373699 3.34056337447335 2503699.708042265 8.0519579198399 332.780107980231 27.5794985946382 -65.992346148791 1533475.26042999 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2181-Dec-31 17:33 00:11 Jupiter 1.86279169610668 1.86278688989683 1.86279650230912 1.80426082537284 1.53164786242213 2518019.231074577 10.9400998976968 386.311349823355 56.1110184862949 68.6324427732815 753812.707498271 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31
2191-May-31 07:06 00:12 Jupiter 1.74029860603402 1.74029469438909 1.74030251765235 1.92055927784659 1.64776390682688 2521456.795769727 11.7985099420997 244.866829583252 71.2550336033489 21.1757229395587 292332.003655617 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 18:31:06 2019-Dec-14 18:31

Alternate Designations
 2008 SQ54 = 2003 UW28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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