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363027 (1998 ST27)
Classification: Aten [NEO, PHA]          SPK-ID: 2363027
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456516.5 (2013-Aug-12.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5299850784365765 1.4086e-07  
a .8193675140202153 2.4308e-09 au
q .3851149578338288 1.1447e-07 au
i 21.05470616006107 1.1119e-05 deg
node 197.5735573130577 5.6472e-06 deg
peri 322.4516996664153 7.4076e-06 deg
M 250.1787093771159 1.2142e-05 deg
tp 2456599.141954761350
(2013-Nov-02.64195476)
9.0166e-06 TDB
period 270.904699310523
0.74
1.2055e-06
3.3e-09
d
yr
n 1.328880602352903 5.9136e-09 deg/d
Q 1.253620070206602 3.7191e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 2.103040496761545E-14 3.899E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      408  
   # delay obs. used      6  
   # Doppler obs. used      1  
   data-arc span      7309 days (20.01 yr)  
   first obs. used      1998-09-24  
   last obs. used      2018-09-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39313  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-14 15:28:49  

Additional Information
 Earth MOID = .00974927 au 
 Jupiter MOID = 3.76473 au 
 T_jup = 6.979 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 19.5   n/a MPO260882  
diameter diameter 0.578 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 3. 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:
[Benner, L.A.M.; Nolan, M.C.; Ostro, S.J.; Giorgini, J.D.; Margot, J.-L. (2001) IAUC 7730.]
geometric albedo albedo 0.059   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

363027 (1998 ST27)          Discovered 1998-Sep-24 by LINEAR at Socorro
Reference: Last Updated: 2013-06-26

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