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21384 (1998 EB10)
Classification: Main-belt Asteroid          SPK-ID: 2021384
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2263204359504322 3.4786e-08  
a 2.308074354285269 5.0144e-09 au
q 1.785709960217415 8.0404e-08 au
i 4.347315138833697 3.2283e-06 deg
node 292.0438077533679 4.5008e-05 deg
peri 16.91090218414047 4.5463e-05 deg
M 104.1220925568939 6.5556e-06 deg
tp 2459026.063726313032
(2020-Jun-25.56372631)
2.3352e-05 TDB
period 1280.775820505532
3.51
4.1738e-06
1.143e-08
d
yr
n .2810796348871619 9.1599e-10 deg/d
Q 2.830438748353123 6.1493e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1843  
   data-arc span      10420 days (28.53 yr)  
   first obs. used      1992-09-07  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:11:27  

Additional Information
 Earth MOID = .77098 au 
 Jupiter MOID = 2.43564 au 
 T_jup = 3.548 
[ 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 15.09   n/a E2021B10  
rotation period rot_per 3.22 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

21384 (1998 EB10)          Discovered 1998-Mar-01 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 EB10 = 1999 RR105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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