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35475 (1998 EP9)
Classification: Main-belt Asteroid          SPK-ID: 2035475
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1380885525464621 4.5197e-08  
a 2.4383947019977 9.5745e-09 au
q 2.101680307061875 1.1378e-07 au
i 3.302792083917113 3.6499e-06 deg
node 111.7383714851635 7.3779e-05 deg
peri 85.10503837416961 7.5146e-05 deg
M 273.1719093821833 1.5813e-05 deg
tp 2459335.937942861583
(2021-May-01.43794286)
6.2133e-05 TDB
period 1390.767188025567
3.81
8.1914e-06
2.243e-08
d
yr
n .2588499377175283 1.5246e-09 deg/d
Q 2.775109096933524 1.0897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1294  
   data-arc span      8051 days (22.04 yr)  
   first obs. used      1998-01-10  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:50:40  

Additional Information
 Earth MOID = 1.10316 au 
 Jupiter MOID = 2.18375 au 
 T_jup = 3.488 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO452666  
diameter diameter 2.306 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.96 h n/a LCDB (Rev. 2019-August); 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.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.438   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35475 (1998 EP9)          Discovered 1998-Mar-06 by Kagawa, T. at Gekko
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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