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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 
[ 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 12.90   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1976-Oct-11 20:43 < 00:01 Jupiter 1.99528383378085 1.99528350336894 1.99528416419288 3.54502367836579 3.42318102041341 2443063.362963125 0.668343090434862 41.4674240775115 9.86388934860425 73.5069394882047 7045960.73208732 T 39 CATAB v2.0g-lin.ifort 2021-May-04 02:58:31 2021-May-04 02:58
1999-Dec-25 19:03 < 00:01 Jupiter 1.92257908715057 1.92257887257789 1.92257930172324 3.55102252018843 3.42470866274344 2451538.293641543 0.270357256609646 22.1185868469253 8.04798564619094 79.0285651083729 8354203.38411991 T 39 CATAB v2.0g-lin.ifort 2021-May-04 02:58:31 2021-May-04 02:58
2023-Mar-15 14:43 < 00:01 Jupiter 1.92222218652366 1.92222202621807 1.92222234682925 3.58752800952202 3.462522505985 2460019.112850450 0.198811854683498 17.7449976076831 6.51048305740909 85.0195777014187 10913370.2157413 T 39 CATAB v2.0g-lin.ifort 2021-May-04 02:58:31 2021-May-04 02:58
2046-May-28 18:49 < 00:01 Jupiter 1.98992323285558 1.98992298432893 1.98992348138245 3.64587163609745 3.52718985038414 2468494.284344496 0.588623764308817 43.4403005522711 5.61081773216141 -76.2289491668315 11590693.1733771 T 39 CATAB v2.0g-lin.ifort 2021-May-04 02:58:31 2021-May-04 02:58
2178-Feb-06 01:28 00:03 Jupiter 1.93870180789419 1.93870127090642 1.93870234488759 3.50787898383467 3.38103699436388 2516594.561381209 2.56817005252132 184.627362104155 8.57678011617692 81.9122020462834 7764095.80907078 T 39 CATAB v2.0g-lin.ifort 2021-May-04 02:58:31 2021-May-04 02:58

Alternate Designations
 1999 SR4 = 1985 UV6 = 1990 WU15 = 1994 SM10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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