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JPL Small-Body Database Browser
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154980 (2004 UN7)
Classification: Main-belt Asteroid          SPK-ID: 2154980
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08764120060116903 3.8278e-08  
a 3.022408143872306 3.2943e-08 au
q 2.757520665436586 1.2044e-07 au
i 9.949463767112121 9.3575e-06 deg
node 8.280478312812582 2.6325e-05 deg
peri 86.48745464206145 6.9941e-05 deg
M 297.2389547897957 6.8877e-05 deg
tp 2459335.092159492408
(2021-Apr-30.59215949)
0.00037031 TDB
period 1919.234726155937
5.25
3.1378e-05
8.591e-08
d
yr
n .1875747635731087 3.0667e-09 deg/d
Q 3.287295622308025 3.583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      7348 days (20.12 yr)  
   first obs. used      1999-10-14  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:30:57  

Additional Information
 Earth MOID = 1.79699 au 
 Jupiter MOID = 1.88985 au 
 T_jup = 3.217 
[ 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 14.9   n/a MPO502914  

154980 (2004 UN7)          Discovered 2004-Oct-21 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ 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
1999-Jan-17 07:48 < 00:01 Jupiter 1.97304529846418 1.97304421249777 1.9730463844307 4.50766445398783 4.41139940837651 2451195.824865413 0.808067476490394 85.5918770536884 44.9731865403138 -73.5335472193735 1563425.47364742 T 18 CATAB v2.0f-lin.ifort 2019-Dec-04 13:31:09 2019-Dec-04 13:31
2046-Apr-12 11:58 00:02 Jupiter 1.94549417456146 1.94549334832744 1.94549500079626 4.36525253736623 4.26434949806721 2468447.998789454 1.50753461844033 127.454963788831 30.528604543732 -79.8023290182702 1832821.796769 T 18 CATAB v2.0f-lin.ifort 2019-Dec-04 13:31:09 2019-Dec-04 13:31
2093-Jul-07 19:52 00:04 Jupiter 1.91949830016277 1.91949751285148 1.91949908747418 4.21326510778091 4.10719577532483 2485701.327510277 3.83111428476109 231.844856622741 34.6020793108446 -88.0524128854869 1704295.0108269 T 18 CATAB v2.0f-lin.ifort 2019-Dec-04 13:31:09 2019-Dec-04 13:31
2140-Oct-02 12:58 00:06 Jupiter 1.89978709045038 1.89978630561567 1.89978787528542 4.05459479305148 3.94309984219506 2502954.040263677 6.21722409785419 317.743189442672 34.1007550703508 -87.5978275954055 1593097.25606353 T 18 CATAB v2.0f-lin.ifort 2019-Dec-04 13:31:09 2019-Dec-04 13:31
2187-Dec-28 03:05 00:09 Jupiter 1.89100422690903 1.89100330406976 1.89100514975507 3.90017762340122 3.78358842458471 2520206.628350599 8.6938442878439 325.702837076772 34.1920093320905 -82.9063104623922 1494565.28320281 T 18 CATAB v2.0f-lin.ifort 2019-Dec-04 13:31:09 2019-Dec-04 13:31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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