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484976 (2009 UN3)
Classification: Apollo [NEO, PHA]          SPK-ID: 2484976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5763805865631172 1.9083e-08  
a 2.32582530244701 1.1045e-08 au
q .985264750379263 4.5523e-08 au
i 37.45308456503764 1.3104e-05 deg
node 141.9705371219952 1.2974e-06 deg
peri 338.8010586749079 1.5817e-05 deg
M 330.4087778163818 8.9997e-06 deg
tp 2459106.993834596555
(2020-Sep-14.49383460)
3.3111e-05 TDB
period 1295.579486946087
3.55
9.2285e-06
2.527e-08
d
yr
n .2778679375733129 1.9793e-09 deg/d
Q 3.666385854514757 1.7411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      360  
   # delay obs. used      4  
   # Doppler obs. used      3  
   data-arc span      5159 days (14.12 yr)  
   first obs. used      2003-03-07  
   last obs. used      2017-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .33336  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-10 05:58:10  

Additional Information
 Earth MOID = .0227631 au 
 Jupiter MOID = 1.57509 au 
 T_jup = 3.105 
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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 18.5   n/a MPO437843  
rotation period rot_per 4.123 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hicks, M.; Barajas, T.; Shitanishi, J. (2010) Astronomer's Telegram 2449. http://www.astronomerstelegram.org.]
[Polishook, D. (2012) Minor Planet Bull. 39, 187-192.]

484976 (2009 UN3)          Discovered 2009-Oct-19 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2017-03-14

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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