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180994 (2005 NT21)
Classification: Main-belt Asteroid          SPK-ID: 2180994
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05623716367200814 5.1892e-08  
a 2.79196179020702 1.9207e-08 au
q 2.634949778045154 1.422e-07 au
i 3.41068234627522 5.3751e-06 deg
node 237.2599191679042 9.6709e-05 deg
peri 66.15042491510044 0.00011045 deg
M 112.4494927790588 5.1655e-05 deg
tp 2458668.247594968370
(2019-Jul-03.74759497)		 0.00024448 TDB
period 1703.972699884602
4.67		 1.7584e-05
4.814e-08		 d
yr
n .2112709904474292 2.1802e-09 deg/d
Q 2.948973802368884 2.0288e-08 au
   Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      7936 days (21.73 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54393  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:44:39  

Additional Information
 Earth MOID = 1.61994 au 
 Jupiter MOID = 2.1714 au 
 T_jup = 3.324 
[ 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 16.60   n/a E2021B55  

180994 (2005 NT21)          Discovered 2005-Jul-01 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

Alternate Designations
 2005 NT21 = 2001 UW199 = 2004 GU55 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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