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18829 (1999 NE30)
Classification: Main-belt Asteroid          SPK-ID: 2018829
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1218924582860509 1.0189e-08  
a 2.777703818654999 1.3288e-08 au
q 2.43912267180859 2.6255e-08 au
i 10.31730277571132 6.564e-07 deg
node 119.1711894428489 3.6546e-06 deg
peri 338.7640446044641 1.6479e-05 deg
M 74.08911070573184 1.3657e-05 deg
tp 2458852.500025710061
(2020-Jan-04.00002571)
6.369e-05 TDB
period 1690.936624168251
4.63
1.2134e-05
3.322e-08
d
yr
n .2128997591362001 1.5277e-09 deg/d
Q 3.116284965501408 1.4908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      15342 days (42.00 yr)  
   first obs. used      1979-03-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46667  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:48:11  

Additional Information
 Earth MOID = 1.45877 au 
 Jupiter MOID = 2.02959 au 
 T_jup = 3.300 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457001.5 (2014-Dec-10.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204696218846641 9.8227e-09  
q 2.443044769677617 2.507e-08 au
tp 2457164.824725707247
(2015-May-22.32472571)
6.3832e-05 TDB
node 119.2464196776955 3.6517e-06 deg
peri 339.5277036965879 1.6659e-05 deg
i 10.3218977784101 6.5657e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      15342 days (42.00 yr)  
   first obs. used      1979-03-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46667  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:48:11  

Additional Information
 Jupiter MOID = 2.02959 au 
 T_jup = 3.300 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.648503249746677E-17 -2.226562267830652E-16 -3.38351056694027E-13 5.314044878265044E-16 -8.38104585674778E-14 8.279383464472781E-16
q -2.226562267830652E-16 6.285233559345478E-16 9.058474233014156E-13 -1.084601282670106E-15 2.237627841219704E-13 -2.453472590369523E-15
tp -3.38351056694027E-13 9.058474233014156E-13 4.074489770052593E-9 -2.173012754951368E-11 1.035210595548669E-9 9.080130891725471E-12
node 5.314044878265044E-16 -1.084601282670106E-15 -2.173012754951368E-11 1.333511265792719E-11 -1.915387311579864E-11 -9.220245332581481E-13
peri -8.38104585674778E-14 2.237627841219704E-13 1.035210595548669E-9 -1.915387311579864E-11 2.775198516425561E-10 3.221432104109277E-12
i 8.279383464472781E-16 -2.453472590369523E-15 9.080130891725471E-12 -9.220245332581481E-13 3.221432104109277E-12 4.310899951394878E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.48   n/a MPCxxxxx  
rotation period rot_per 12.276 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

18829 (1999 NE30)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NE30 = 1979 FX3 = 1998 HW124 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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