Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
19698 (1999 SR4)
Classification: Main-belt Asteroid          SPK-ID: 2019698
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08574745473937297 2.3725e-08  
a 2.800535154516641 1.1397e-08 au
q 2.560396393108703 6.8357e-08 au
i 8.907082991744112 9.1706e-07 deg
node 198.187297864383 5.2625e-06 deg
peri 17.86215462598646 1.2082e-05 deg
M 349.3501508995129 7.7761e-06 deg
tp 2459251.140842613013
(2021-Feb-05.64084261)
3.6975e-05 TDB
period 1711.827385408761
4.69
1.0449e-05
2.861e-08
d
yr
n .2103015777575242 1.2837e-09 deg/d
Q 3.04067391592458 1.2374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2743  
   data-arc span      12939 days (35.43 yr)  
   first obs. used      1985-10-18  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43003  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:57:43  

Additional Information
 Earth MOID = 1.55471 au 
 Jupiter MOID = 1.92312 au 
 T_jup = 3.302 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457208.5 (2015-Jul-05.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08744637693803002 2.3569e-08  
q 2.557223965179316 6.8039e-08 au
tp 2457536.391098547605
(2016-May-27.89109855)
3.7861e-05 TDB
node 198.2388784086849 5.2687e-06 deg
peri 17.3798573186058 1.2001e-05 deg
i 8.900024748706308 9.168e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2743  
   data-arc span      12939 days (35.43 yr)  
   first obs. used      1985-10-18  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43003  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:57:43  

Additional Information
 Jupiter MOID = 1.92312 au 
 T_jup = 3.302 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.55482037180019E-16 -1.585078150742299E-15 5.015272212423988E-13 -3.772033648368015E-14 1.912537911570324E-13 3.446087115066134E-15
q -1.585078150742299E-15 4.629367563510188E-15 -1.51116966281216E-12 1.091417288325421E-13 -5.690070018793285E-13 -1.002742745790091E-14
tp 5.015272212423988E-13 -1.51116966281216E-12 1.433492008642527E-9 -4.282876958509065E-11 3.996416696102014E-10 1.451442754144695E-12
node -3.772033648368015E-14 1.091417288325421E-13 -4.282876958509065E-11 2.775870531776634E-11 -4.003607221467958E-11 -2.249251047437226E-12
peri 1.912537911570324E-13 -5.690070018793285E-13 3.996416696102014E-10 -4.003607221467958E-11 1.440261414370612E-10 2.867276729182096E-12
i 3.446087115066134E-15 -1.002742745790091E-14 1.451442754144695E-12 -2.249251047437226E-12 2.867276729182096E-12 8.405278440338138E-13

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 12.90   n/a MPCxxxxx  
diameter diameter 7.115 km 0.275 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.381 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.318   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19698 (1999 SR4)          Discovered 1999-Sep-29 by Korlevic, K. at Visnjan
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SR4 = 1985 UV6 = 1990 WU15 = 1994 SM10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-13 01:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin