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19667 (1999 RS144)
Classification: Main-belt Asteroid          SPK-ID: 2019667
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05173878390049302 4.1033e-08  
a 2.990515122134861 1.5762e-08 au
q 2.835789506479569 1.179e-07 au
i 8.848095661791792 3.7076e-06 deg
node 271.3177832211506 3.7539e-05 deg
peri 354.9115838061506 7.2512e-05 deg
M 108.5916443879275 6.309e-05 deg
tp 2458630.714569571102
(2019-May-27.21456957)
0.00033075 TDB
period 1888.936815632267
5.17
1.4934e-05
4.089e-08
d
yr
n .1905833996249898 1.5067e-09 deg/d
Q 3.145240737790153 1.6577e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1781  
   data-arc span      11460 days (31.38 yr)  
   first obs. used      1989-09-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:01:25  

Additional Information
 Earth MOID = 1.81812 au 
 Jupiter MOID = 1.93671 au 
 T_jup = 3.236 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457130.5 (2015-Apr-18.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05190252880074769 4.0798e-08  
q 2.837371664787166 1.1748e-07 au
tp 2456757.246574456160
(2014-Apr-09.74657446)
0.00033076 TDB
node 271.3853377678789 3.76e-05 deg
peri 358.2712147394883 7.2593e-05 deg
i 8.838284713916053 3.7052e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1781  
   data-arc span      11460 days (31.38 yr)  
   first obs. used      1989-09-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:01:25  

Additional Information
 Jupiter MOID = 1.93671 au 
 T_jup = 3.236 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664489150458523E-15 -4.758719198466044E-15 1.02568326643808E-12 3.573124980314988E-16 1.098548009400651E-13 3.894505140210824E-16
q -4.758719198466044E-15 1.380070209111725E-14 -3.32915602479929E-12 2.838967295369989E-15 -3.866235264266595E-13 -4.377876740911004E-16
tp 1.02568326643808E-12 -3.32915602479929E-12 1.094052065415876E-7 -1.024859385152646E-10 2.059132504237861E-8 -3.134327336686726E-11
node 3.573124980314988E-16 2.838967295369989E-15 -1.024859385152646E-10 1.413769258889769E-9 -1.41595913510767E-9 -1.172627908792308E-11
peri 1.098548009400651E-13 -3.866235264266595E-13 2.059132504237861E-8 -1.41595913510767E-9 5.26978439564932E-9 5.730534132440565E-12
i 3.894505140210824E-16 -4.377876740911004E-16 -3.134327336686726E-11 -1.172627908792308E-11 5.730534132440565E-12 1.372821630414895E-11

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 13.31   n/a E2021B10  
diameter diameter 7.655 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.173   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19667 (1999 RS144)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RS144 = 1989 SS12 = 1998 KM36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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