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19696 (1999 SW1)
Classification: Main-belt Asteroid          SPK-ID: 2019696
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .124641493705932 2.5477e-08  
a 3.192188579026963 2.2712e-08 au
q 2.794309426346026 8.4111e-08 au
i 16.63799559199417 2.1238e-06 deg
node 255.6147659253267 3.0027e-06 deg
peri 152.4837745838425 9.953e-06 deg
M 216.2635228566961 1.1508e-05 deg
tp 2460032.255596552873
(2023-Mar-28.75559655)
7.0365e-05 TDB
period 2083.20129107174
5.70
2.2233e-05
6.087e-08
d
yr
n .1728109528075377 1.8443e-09 deg/d
Q 3.5900677317079 2.5543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      24006 days (65.72 yr)  
   first obs. used      1954-11-23  
   last obs. used      2020-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47085  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:03:00  

Additional Information
 Earth MOID = 1.8155 au 
 Jupiter MOID = 1.77999 au 
 T_jup = 3.119 
[ 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 12.86   n/a E2021B10  
diameter diameter 13.769 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.73406 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.]
geometric albedo albedo 0.071   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19696 (1999 SW1)          Discovered 1999-Sep-18 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 SW1 = 1977 XM = 1994 WW3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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