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6238 (1989 NM)
Classification: Main-belt Asteroid          SPK-ID: 2006238
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1589397911831802 4.1975e-08  
a 2.56190317466584 1.4868e-08 au
q 2.154714819052925 1.0641e-07 au
i 8.354044995711817 4.9392e-06 deg
node 98.95823593267799 3.7615e-05 deg
peri 215.6971672075707 4.257e-05 deg
M 153.8884086322461 2.1324e-05 deg
tp 2456760.255431970165
(2014-Apr-12.75543197)
8.7888e-05 JED
period 1497.760920002416
4.10
1.3038e-05
3.57e-08
d
yr
n .2403587883701887 2.0924e-09 deg/d
Q 2.969091530278755 1.7231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1606  
   data-arc span      22187 days (60.74 yr)  
   first obs. used      1955-03-22  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46746  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:59:18  

Additional Information
 Earth MOID = 1.14471 au 
 Jupiter MOID = 2.29354 au 
 T_jup = 3.402 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO358691  
rotation period rot_per 10.8189 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

6238 (1989 NM)          Discovered 1989-Jul-02 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 NM = 1972 JP = 1976 HH = 1977 TW6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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