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30308 Ienli (2000 JN1)
Classification: Main-belt Asteroid          SPK-ID: 2030308
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403518813464992 3.004e-08  
a 2.289962835278285 7.5663e-09 au
q 1.968562243133414 6.9535e-08 au
i 5.270555637562846 3.5301e-06 deg
node 232.4640987694282 3.6498e-05 deg
peri 87.53362748234217 3.8593e-05 deg
M 245.178661918905 1.2526e-05 deg
tp 2459604.202260152695
(2022-Jan-24.70226015)
4.4444e-05 TDB
period 1265.730012241505
3.47
6.2732e-06
1.718e-08
d
yr
n .2844208452973863 1.4096e-09 deg/d
Q 2.611363427423156 8.6283e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1392  
   data-arc span      16370 days (44.82 yr)  
   first obs. used      1976-05-29  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48367  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:28:20  

Additional Information
 Earth MOID = .96236 au 
 Jupiter MOID = 2.67092 au 
 T_jup = 3.580 
[ 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 15.42   n/a E2021B10  
rotation period rot_per 1.77 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

30308 Ienli           Discovered 2000 May 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ien Li (b. 1997) is a finalist in the 2015 Intel Science Talent Search, a science competition for high school seniors, for her behavioral and social sciences project. She attends the Jericho Senior High School, Jericho, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-06-02Last Updated: 2015-06-04

Alternate Designations
 2000 JN1 = 1987 QN4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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