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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08591797634252352 3.5781e-08  
a 2.801140951719927 1.2345e-08 au
q 2.560472589697981 1.0359e-07 au
i 8.906129993073391 3.981e-06 deg
node 198.1901050175216 2.1994e-05 deg
peri 17.78506878369102 3.0602e-05 deg
M 307.3720453017816 2.1792e-05 deg
tp 2459250.831131564938
(2021-Feb-05.33113156)
0.00010411 TDB
period 1712.382855844261
4.69
1.132e-05
3.099e-08
d
yr
n .2102333591879535 1.3898e-09 deg/d
Q 3.041809313741874 1.3406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2512  
   data-arc span      12611 days (34.53 yr)  
   first obs. used      1985-10-18  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43498  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:04:26  

Additional Information
 Earth MOID = 1.5558 au 
 Jupiter MOID = 1.92307 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 12.9   n/a MPO459003  
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. 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:
[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

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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 1.99528374318559 1.99528335908965 1.99528412728176 3.54502279109792 3.42318009524889 2443063.363024262 0.75442298716343 60.3420244672933 14.0894379698727 79.364391647795 4266395.14741319 T 33 CATAB v2.0f-lin.ifort 2020-May-20 05:04:42 2020-May-20 05:04
1999-Dec-25 19:03 < 00:01 Jupiter 1.92257898829541 1.92257869110453 1.92257928548618 3.55102109221171 3.42470717477326 2451538.293694397 0.316658544834933 42.4865128578285 12.5868923149308 89.7434298446582 3853747.52609661 T 33 CATAB v2.0f-lin.ifort 2020-May-20 05:04:42 2020-May-20 05:04
2023-Mar-15 14:43 < 00:01 Jupiter 1.92222207302669 1.9222217675103 1.92222237854307 3.5875261864846 3.46252060891426 2460019.112867423 0.213275128908026 34.9380327330903 13.0234765953954 -88.3185547057475 3804075.07339771 T 33 CATAB v2.0f-lin.ifort 2020-May-20 05:04:42 2020-May-20 05:04
2046-May-28 18:49 < 00:01 Jupiter 1.98992308340349 1.98992272692864 1.98992343987846 3.64586959683165 3.52718773277155 2468494.284356474 0.627631728608083 54.84738024363 13.539927846728 -80.5715307547391 3909960.24044397 T 33 CATAB v2.0f-lin.ifort 2020-May-20 05:04:42 2020-May-20 05:04
2178-Feb-06 01:30 00:03 Jupiter 1.9387019134089 1.938701254413 1.9387025724112 3.50787739182566 3.38103534894856 2516594.562185135 2.78821814049413 202.608784709504 13.3603171649457 81.5034817973947 3916361.51046445 T 33 CATAB v2.0f-lin.ifort 2020-May-20 05:04:42 2020-May-20 05:04

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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