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19360 (1997 JS12)
Classification: Main-belt Asteroid          SPK-ID: 2019360
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102297246628199 3.63e-08  
a 3.108741858329691 1.5756e-08 au
q 2.766066099238226 1.0946e-07 au
i .6659744179627195 3.8579e-06 deg
node 150.2195884251646 0.00030921 deg
peri 18.73392123221601 0.00030968 deg
M 154.632110766814 1.7587e-05 deg
tp 2458340.551186587468
(2018-Aug-10.05118659)
9.6209e-05 TDB
period 2002.052298796865
5.48
1.5221e-05
4.167e-08
d
yr
n .1798154824508542 1.3671e-09 deg/d
Q 3.451417617421155 1.7493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1294  
   data-arc span      15747 days (43.11 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54517  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:09:14  

Additional Information
 Earth MOID = 1.77205 au 
 Jupiter MOID = 1.51669 au 
 T_jup = 3.210 
[ 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 14.43   n/a E2021B10  
diameter diameter 6.842 km 0.346 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.00 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.055   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19360 (1997 JS12)          Discovered 1997-May-03 by Elst, E. W. at La Silla
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1997 JS12 = 1977 RY18 = 1978 WS4 = 1999 RS228 = 1999 SZ21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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