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91487 (1999 RT117)
Classification: Main-belt Asteroid          SPK-ID: 2091487
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286297450679616 4.7019e-08  
a 2.671860454388363 1.5755e-08 au
q 2.32817972528322 1.2579e-07 au
i 13.57730818793694 4.084e-06 deg
node 282.3158211252287 2.0669e-05 deg
peri 72.29996118180881 2.6863e-05 deg
M 249.9365173320611 1.8726e-05 deg
tp 2459488.207950110240
(2021-Sep-30.70795011)
8.451e-05 TDB
period 1595.214486982891
4.37
1.411e-05
3.863e-08
d
yr
n .2256749816013056 1.9961e-09 deg/d
Q 3.015541183493506 1.7782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1259  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:39:59  

Additional Information
 Earth MOID = 1.36289 au 
 Jupiter MOID = 2.44281 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457347.5 (2015-Nov-21.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279359332251025 4.7028e-08  
q 2.330153426059173 1.2559e-07 au
tp 2457894.486099120345
(2017-May-20.98609912)
8.0499e-05 TDB
node 282.3249622526708 2.0671e-05 deg
peri 72.67151581018992 2.6903e-05 deg
i 13.57567255473803 4.0837e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1259  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:39:59  

Additional Information
 Jupiter MOID = 2.44281 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.211670797508539E-15 -5.870347792485509E-15 1.274653770190243E-12 -1.586064103055842E-14 2.245798541102551E-13 -1.158216885913247E-15
q -5.870347792485509E-15 1.57717414024464E-14 -3.165293920616783E-12 4.104014410334739E-14 -5.622990374260169E-13 3.510942627455259E-15
tp 1.274653770190243E-12 -3.165293920616783E-12 6.480101773780946E-9 -2.296249013843981E-11 1.412610104510338E-9 -6.245017355286811E-12
node -1.586064103055842E-14 4.104014410334739E-14 -2.296249013843981E-11 4.272825318548473E-10 -4.19567895675971E-10 -8.170789956382598E-12
peri 2.245798541102551E-13 -5.622990374260169E-13 1.412610104510338E-9 -4.19567895675971E-10 7.237805692016707E-10 6.583916876249619E-12
i -1.158216885913247E-15 3.510942627455259E-15 -6.245017355286811E-12 -8.170789956382598E-12 6.583916876249619E-12 1.667651961989318E-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 13.8   n/a MPO325093  
diameter diameter 5.260 km 0.474 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91487 (1999 RT117)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ 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
2162-Nov-12 05:41 < 00:01 Europ 0.0396001936537268 0.0395696851545311 0.0396307061421862 6.96593054657546 6.96593050804579 2511029.737084016 0.513187671757387 1645.2213223979 47.6673410403649 22.408563948794 47480.0194097234 T 25 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:15 2020-Jun-24 00:40
2182-Nov-27 12:08 00:10 Iris 0.00471986243908162 0.00468169162802926 0.00475804531073041 3.84326896143386 3.84326864451876 2518350.005453423 9.67578042303739 1939.46713762327 52.3235479507154 -11.1888084581232 2639.32690954634 T 25 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:15 2020-Jun-24 00:40

Alternate Designations
 1999 RT117 = 2000 WP86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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