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181778 (1997 UN5)
Classification: Outer Main-belt Asteroid          SPK-ID: 2181778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1848435364623406 5.1992e-08  
a 3.948851721015148 6.1285e-08 au
q 3.218932003937308 2.0331e-07 au
i 9.956216487008792 7.6327e-06 deg
node 33.00132032687944 3.3536e-05 deg
peri 94.37462753594767 4.1173e-05 deg
M 267.1521964410617 2.5141e-05 deg
tp 2459939.720155780038
(2022-Dec-26.22015578)
0.00021244 TDB
period 2866.187953621172
7.85
6.6724e-05
1.827e-07
d
yr
n .1256023700557293 2.924e-09 deg/d
Q 4.678771438092988 7.2613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      320  
   data-arc span      8496 days (23.26 yr)  
   first obs. used      1997-10-03  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:00  

Additional Information
 Earth MOID = 2.25511 au 
 Jupiter MOID = .717964 au 
 T_jup = 3.004 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.56   n/a MPCxxxxx  

181778 (1997 UN5)          Discovered 1997-Oct-21 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1997 UN5 = 2005 UD25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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