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JPL Small-Body Database Browser
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109978 (2001 ST54)
Classification: Main-belt Asteroid          SPK-ID: 2109978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1381358772994179 5.3338e-08  
a 3.175222228303036 1.966e-08 au
q 2.736610120175784 1.6998e-07 au
i 6.449965867449984 4.1118e-06 deg
node 100.3991539633127 5.1476e-05 deg
peri 244.9587628808679 5.3885e-05 deg
M 132.3710915735674 1.8211e-05 deg
tp 2458240.610811339084
(2018-May-02.11081134)
0.00010302 TDB
period 2066.615185128199
5.66
1.9194e-05
5.255e-08
d
yr
n .1741978877299636 1.6179e-09 deg/d
Q 3.613834336430289 2.2376e-08 au
  Orbit Determination Parameters
   # obs. used (total)      785  
   data-arc span      10631 days (29.11 yr)  
   first obs. used      1990-12-25  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57332  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:36:52  

Additional Information
 Earth MOID = 1.73707 au 
 Jupiter MOID = 1.80963 au 
 T_jup = 3.176 
[ 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 14.5   n/a MPO453561  
diameter diameter 6.680 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 144. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]
geometric albedo albedo 0.063   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109978 (2001 ST54)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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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
1907-Apr-10 07:06 00:03 Jupiter 1.81277212131794 1.81277151295823 1.81277272967807 2.81856150243049 2.64759961306103 2417675.795586592 2.81225427132444 95.9705589240399 14.6261957614894 87.2565724852654 2262453.23850652 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
1917-Dec-26 12:16 00:03 Jupiter 1.96880129608704 1.96880033831311 1.96880225386108 3.70378178834638 3.58574324751012 2421589.010893733 2.55790799416983 68.1730101015344 29.3228734449381 -66.3443693488594 1993907.63232382 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
1993-May-01 01:39 < 00:01 Jupiter 1.98997238176163 1.98997174803412 1.98997301548902 2.56018046096177 2.38814431466801 2449108.568981808 0.720413018020805 65.2246926147481 14.0767315003419 -83.6616453051932 2118415.4769857 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2004-Jan-22 22:13 < 00:01 Jupiter 1.84315058062809 1.84315002633653 1.84315113491953 2.18152298925169 1.9595763979081 2453027.425689860 0.416622942910214 62.0432476749068 6.35530054645871 -73.133171434066 2183501.05631511 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2014-Oct-20 06:44 < 00:01 Jupiter 1.79331985321005 1.79331944944492 1.79332025697518 2.47664796754232 2.27796911270865 2456950.780255175 0.234949249653842 62.0483137459698 10.2929581327584 -79.7668432697559 2751105.87721154 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2025-Jul-13 11:20 < 00:01 Jupiter 1.88151212662645 1.88151169891258 1.88151255434032 3.19522131331448 3.05107778352854 2460869.972471522 0.405847507491332 57.1452214578875 16.1956331973852 -89.0630055899031 3253066.53226054 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2111-Aug-10 12:32 00:02 Jupiter 1.91720522728636 1.91720445032247 1.91720600425134 2.27390311246149 2.07051541038515 2492308.022518032 2.46820982641364 140.812347023302 7.79382259761823 -85.5177269161932 1957453.01164635 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2122-May-04 21:50 00:03 Jupiter 1.8175544033897 1.81755386122123 1.8175549455595 2.20670170853538 1.98430996425211 2496228.409935205 2.78707609717716 159.982287767347 11.3174234083548 -79.1351411404148 2356167.74245968 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2133-Jan-30 08:48 00:03 Jupiter 1.83001317389251 1.83001265113619 1.83001369664967 2.74150659298175 2.56713018676354 2500151.866863259 3.13068610925361 130.414978419153 12.8725257962395 -88.5568048940476 2652746.81208607 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
2143-Oct-23 14:04 00:03 Jupiter 1.96138608383635 1.96138504386948 1.96138712380299 3.64929281769052 3.52897154627053 2504070.086217945 3.47730985877042 55.0311447356401 39.0757907193812 74.7112837362328 1379008.33065639 T 26 CATAB v2.0f-lin.ifort 2020-Feb-24 03:36:55 2020-Feb-24 03:37
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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