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90574 (2004 GS21)
Classification: Main-belt Asteroid          SPK-ID: 2090574
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1967277258432826 3.6966e-08  
a 2.677196472986596 1.2316e-08 au
q 2.150517699220286 1.0032e-07 au
i 12.14044470902951 4.5261e-06 deg
node 171.9092602796444 1.7214e-05 deg
peri 157.9209150699903 2.0497e-05 deg
M 256.5978909497578 1.3013e-05 deg
tp 2459856.063670383350
(2022-Oct-03.56367038)
5.9185e-05 TDB
period 1599.995617667902
4.38
1.1041e-05
3.023e-08
d
yr
n .2250006162671391 1.5526e-09 deg/d
Q 3.203875246752906 1.4739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      850  
   data-arc span      9014 days (24.68 yr)  
   first obs. used      1996-09-13  
   last obs. used      2021-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:38:35  

Additional Information
 Earth MOID = 1.14471 au 
 Jupiter MOID = 2.21911 au 
 T_jup = 3.319 
[ 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 15.26   n/a E2021B10  
rotation period rot_per 5.3487 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.]

90574 (2004 GS21)          Discovered 2004-Apr-11 by NEAT at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 2004 GS21 = 1996 TP42 = 2001 VF97 = 2003 ES13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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