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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1592209575566483 4.2892e-08  
a 2.561776086774621 1.6172e-08 AU
q 2.153887645192643 1.0997e-07 AU
i 8.354704100775328 5.2187e-06 deg
node 98.95971868202429 4.1044e-05 deg
peri 215.7159023417858 4.6557e-05 deg
M 57.68877802761885 2.3362e-05 deg
tp 2456760.506755583897
(2014-Apr-13.00675558)
9.6919e-05 JED
period 1497.64947263112
4.10
1.4181e-05
3.883e-08
d
yr
n .2403766746350467 2.2761e-09 deg/d
Q 2.9696645283566 1.8747e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1470  
   data-arc span      21877 days (59.90 yr)  
   first obs. used      1955-03-22  
   last obs. used      2015-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45137  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:02:56  

Additional Information
 Earth MOID = 1.14677 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 12.5 mag n/a PDS3 (MPC 24727)  
rotation period rot_per 10.8189 h n/a LCDB (Rev. 2015-July); 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., in press.]

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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