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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754950088482488 1.2438e-08  
a 3.173759501576688 1.6938e-08 au
q 2.616780549765274 3.8856e-08 au
i 9.752053382296642 6.5981e-07 deg
node 325.0242039698146 2.063e-06 deg
peri 316.9795911326715 7.6166e-06 deg
M 349.2246227581703 6.1545e-06 deg
tp 2459262.314367642056
(2021-Feb-16.81436764)
3.553e-05 TDB
period 2065.187311006987
5.65
1.6532e-05
4.526e-08
d
yr
n .1743183284544121 1.3955e-09 deg/d
Q 3.730738453388103 1.991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      8989 days (24.61 yr)  
   first obs. used      1996-01-12  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49408  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:02:42  

Additional Information
 Earth MOID = 1.60885 au 
 Jupiter MOID = 1.54633 au 
 T_jup = 3.155 
[ 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 12.88   n/a MPCxxxxx  
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 09:39 00:02 Jupiter 1.83060016687445 1.8305991458539 1.83060118789489 3.35362583533043 3.21269389711297 2439709.902350560 1.58717899168993 47.2198598083187 13.0952942641526 -21.8796532790434 3252234.73274062 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
1978-Jul-13 00:23 00:01 Jupiter 1.60352553256316 1.60352518805761 1.60352587707126 2.54824549316261 2.33176002157371 2443702.515664061 1.19634003173412 111.599801453187 2.93733467344495 88.9825690406435 12597715.354434 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
1989-May-27 13:32 < 00:01 Jupiter 1.59840601567687 1.59840582582033 1.5984062055336 1.55604037976466 1.16680232915409 2447674.063678788 0.908263758002098 101.720494889942 49.7500944031602 -20.6895714053795 3398128.31498999 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
2000-Feb-11 16:40 < 00:01 Jupiter 1.76971057990479 1.76971032954726 1.76971083026232 2.10711781065128 1.86619971111962 2451586.194610632 0.521043147255015 40.2818808065651 5.70120847395567 64.2435556598109 4970969.10492333 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
2010-Nov-20 00:51 < 00:01 Jupiter 1.9987811881009 1.99878097564839 1.9987814005534 4.35941141572825 4.26109479889135 2455520.535439595 0.151432415929147 24.8802083038382 5.88287374398205 72.7991622353278 9490240.16193707 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
2098-Feb-14 06:52 00:02 Jupiter 1.79499305567719 1.79499196333083 1.79499414802405 3.27698690808364 3.12967759873931 2487383.785783068 1.82070403093353 75.0282483829661 9.25092005865811 -50.8551331273789 7287645.03310148 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
2109-Jan-24 09:16 00:02 Jupiter 1.57797908098735 1.5779787049234 1.5779794570609 2.62997367392648 2.41727284133645 2491379.886030697 2.15378363281377 210.91534722374 3.7172791705731 -89.8740923173777 14410271.8724141 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
2119-Dec-16 14:13 00:03 Jupiter 1.60878612467292 1.60878530365459 1.60878694569419 1.7916504565983 1.46867816927971 2495358.092666939 2.99060679043583 191.689029411234 35.4304150038186 -27.6121436465643 3733306.95836921 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04
2130-Aug-31 16:54 00:04 Jupiter 1.81217313519134 1.81217173664416 1.81217453374028 2.16704842159605 1.93940319386803 2499269.203878579 3.75184874089717 181.124011703551 6.90442860527915 65.5175504073606 3895114.99537533 T 34 CATAB v2.0f-lin.ifort 2021-Apr-13 03:04:03 2021-Apr-13 03:04

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