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19690 (1999 RD212)
Classification: Main-belt Asteroid          SPK-ID: 2019690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762988043457916 1.2411e-08  
a 3.176645228484675 1.6136e-08 au
q 2.616606472872063 3.8707e-08 au
i 9.752631783081384 6.598e-07 deg
node 325.0211261695258 2.0561e-06 deg
peri 316.9123435796988 7.5821e-06 deg
M 23.40440996803004 6.1833e-06 deg
tp 2459262.054368457339
(2021-Feb-16.55436846)
3.5057e-05 TDB
period 2068.004594923431
5.66
1.5757e-05
4.314e-08
d
yr
n .1740808511179005 1.3264e-09 deg/d
Q 3.736683984097287 1.8981e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      9341 days (25.57 yr)  
   first obs. used      1996-01-12  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:24:54  

Additional Information
 Earth MOID = 1.61031 au 
 Jupiter MOID = 1.54001 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456933.5 (2014-Oct-03.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735705621983785 1.2482e-08  
q 2.623273122959535 3.8714e-08 au
tp 2457196.261888703666
(2015-Jun-22.76188870)
3.2261e-05 TDB
node 325.0623196485293 2.0576e-06 deg
peri 316.9152186697513 7.7099e-06 deg
i 9.748021677597464 6.5954e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      9341 days (25.57 yr)  
   first obs. used      1996-01-12  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:24:54  

Additional Information
 Jupiter MOID = 1.54001 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.557906402354011E-16 -4.545148102140904E-16 -1.177178433588628E-13 8.129987628858485E-15 -4.00874806519497E-14 2.350158442737053E-15
q -4.545148102140904E-16 1.498757688413267E-15 3.646288938726672E-13 -2.706653779171788E-14 1.265610628624203E-13 -7.462432176247054E-15
tp -1.177178433588628E-13 3.646288938726672E-13 1.040741129580156E-9 1.299149545658668E-11 2.404964911501296E-10 -1.19733538872269E-11
node 8.129987628858485E-15 -2.706653779171788E-14 1.299149545658668E-11 4.233608149821693E-12 -6.546965350894336E-13 7.170452904541026E-15
peri -4.00874806519497E-14 1.265610628624203E-13 2.404964911501296E-10 -6.546965350894336E-13 5.944309274344045E-11 -3.019039316027711E-12
i 2.350158442737053E-15 -7.462432176247054E-15 -1.19733538872269E-11 7.170452904541026E-15 -3.019039316027711E-12 4.349924421064937E-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 MPO636361  
diameter diameter 16.723 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.4988 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.051   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19690 (1999 RD212)          Discovered 1999-Sep-08 by LINEAR at Socorro
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
1967-Aug-07 09:40 00:02 Jupiter 1.83060024862018 1.83059927337858 1.83060122386168 3.35362610459315 3.21269418461886 2439709.902451875 1.50711748392652 45.1041719830845 13.0840825858736 -22.0733047595643 3312809.03606368 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
1978-Jul-13 00:23 00:01 Jupiter 1.60352555746217 1.60352522634699 1.60352588857972 2.54824556768652 2.33176010653413 2443702.515722168 1.13627840977087 106.387235960097 2.93278601104436 88.9568303023466 12614237.722315 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
1989-May-27 13:32 < 00:01 Jupiter 1.59840600354192 1.59840581753071 1.59840618955341 1.55604055176083 1.16680255507915 2447674.063737365 0.863758737861488 97.6520889839749 49.5465434538097 -21.6421327567596 3529668.81255049 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
2000-Feb-11 16:40 < 00:01 Jupiter 1.76971056834202 1.76971032045665 1.76971081622739 2.10711761275562 1.86619948600082 2451586.194644067 0.497220035457685 38.5944777607895 5.69515265660039 64.1359585456771 4984239.59248268 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
2010-Nov-20 00:51 < 00:01 Jupiter 1.99878118648933 1.99878097405967 1.99878139891911 4.35941125076254 4.26109463003918 2455520.535454764 0.146932258152961 24.7683910446219 5.84802155993721 72.6537950722467 9586889.25057987 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
2098-Feb-14 06:51 00:02 Jupiter 1.79499296231415 1.79499192930035 1.79499399532836 3.27698666298843 3.12967733426551 2487383.785667805 1.72435617386335 71.1760670510939 9.21621897765764 -51.0603721340687 7333249.94770259 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
2109-Jan-24 09:16 00:02 Jupiter 1.57797904753674 1.5779786920255 1.57797940305649 2.62997339719681 2.41727253554948 2491379.885902230 2.04043901294425 199.645472454348 3.71390363895893 -89.8609684141748 14432143.7630402 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
2119-Dec-16 14:13 00:03 Jupiter 1.60878619137855 1.60878541187442 1.60878697088524 1.79164998888583 1.46867761357801 2495358.092484971 2.83347289290437 181.496334234726 35.4091752641407 -27.7155152411183 3772135.37305772 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26
2130-Aug-31 16:53 00:04 Jupiter 1.81217325277681 1.81217192801352 1.81217457754164 2.16704935685442 1.93940425454403 2499269.203666008 3.55469434397185 171.59180554063 6.9021010454324 65.5322804729295 3897479.88849801 T 36 CATAB v2.0g-lin.ifort 2021-Aug-24 22:26:19 2021-Aug-24 22:26

Alternate Designations
 1999 RD212 = 1998 MY31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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