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175111 (2004 NR18)
Classification: Main-belt Asteroid          SPK-ID: 2175111
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .270169280279099 4.4156e-08  
a 3.078069044921559 1.9625e-08 au
q 2.246469346405728 1.4097e-07 au
i 4.278199065365113 3.7101e-06 deg
node 179.6675348906007 7.12e-05 deg
peri 69.8236413860225 7.3115e-05 deg
M 34.89131896161934 1.0214e-05 deg
tp 2459009.325109936482
(2020-Jun-08.82510994)
5.6541e-05 TDB
period 1972.495235808433
5.40
1.8865e-05
5.165e-08
d
yr
n .1825099465208355 1.7455e-09 deg/d
Q 3.90966874343739 2.4928e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      8177 days (22.39 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51635  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:04  

Additional Information
 Earth MOID = 1.23555 au 
 Jupiter MOID = 1.15874 au 
 T_jup = 3.167 
[ 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 16.11   n/a E2021B55  

175111 (2004 NR18)          Discovered 2004-Jul-14 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2004 NR18 = 1998 HW56 = 1999 RB244 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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