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180781 (2004 RU54)
Classification: Main-belt Asteroid          SPK-ID: 2180781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2215771701757345 3.018e-08  
a 3.03761550343767 1.8875e-08 au
q 2.364549256104012 8.9555e-08 au
i 6.823133405526445 5.2612e-06 deg
node 215.042203475253 3.195e-05 deg
peri 66.08910251952432 3.5764e-05 deg
M 68.81399002652333 1.3099e-05 deg
tp 2458830.866038057995
(2019-Dec-13.36603806)
7.0102e-05 TDB
period 1933.737983334968
5.29
1.8023e-05
4.934e-08
d
yr
n .1861679312825701 1.7352e-09 deg/d
Q 3.710681750771328 2.3057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      9581 days (26.23 yr)  
   first obs. used      1994-10-13  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:56  

Additional Information
 Earth MOID = 1.35663 au 
 Jupiter MOID = 1.49082 au 
 T_jup = 3.193 
[ 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 15.56   n/a E2021B55  

180781 (2004 RU54)          Discovered 2004-Sep-08 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ 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
1942-Dec-01 21:44 00:02 Jupiter 1.61639506266054 1.61639359576266 1.6163965296321 1.18016976461707 0.587164116584798 2430695.405603043 2.42192032956947 2898.27630507148 197.038432024722 -67.7943700203438 6615236.9210988 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
1952-Mar-13 10:18 00:02 Jupiter 1.89619714252855 1.8961956220995 1.89619866295921 3.25438340482435 3.11410028373612 2434084.929345931 1.99793358056364 128.944312521517 24.7618700256272 -64.4247581201254 1722246.99191885 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
1991-Apr-05 09:15 < 00:01 Jupiter 1.88969349225514 1.8896925442099 1.88969444029898 1.51165656059906 1.17840572670759 2448351.885076193 0.939614307169198 149.900269535198 77.3708269216409 -22.4070489696353 1281844.94596355 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
2000-Jun-20 19:24 < 00:01 Jupiter 1.61758818481414 1.6175874652412 1.6175889043868 2.33878431292306 2.1030088243642 2451716.308405424 0.592917176942145 90.3008666371039 20.753361239614 -74.4369184042514 1616556.64764699 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
2048-Sep-04 19:11 00:01 Jupiter 1.48793419402182 1.4879336014223 1.48793478662065 1.74482498579884 1.38054075038542 2469324.299500751 1.06080201255324 249.645643441801 83.5935384120289 -75.8268250876646 1363756.44132136 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
2096-Nov-12 15:44 00:03 Jupiter 1.54187551925826 1.54187456146933 1.54187647831498 1.18571163714057 0.554275124688836 2486925.155749612 2.86703864237077 6561.10680502211 176.708374460866 -70.0336382842007 10788919.6701219 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
2145-Mar-02 12:09 00:05 Jupiter 1.75185658260135 1.75185361039175 1.75185956039439 1.03922069907834 0.336124721956081 2504566.006020376 5.04871859281904 21225.6518481775 730.765832049102 -32.7654948054894 5220898.35924963 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27
2154-May-23 00:07 00:05 Jupiter 1.75944670642498 1.75944321485597 1.75945019801029 2.78831908389653 2.60996073671056 2507934.504809747 4.94346034895102 338.174240930241 20.728610285006 -71.2241210844311 1362226.51845068 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 21:27:58 2021-Apr-13 21:27

Alternate Designations
 2004 RU54 = 2003 HZ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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