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91442 (1999 RD17)
Classification: Main-belt Asteroid          SPK-ID: 2091442
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2230090991681263 4.4436e-08  
a 2.808062657011761 1.7282e-08 au
q 2.181839133463913 1.2321e-07 au
i 6.91788646521805 5.0671e-06 deg
node 203.0390185338795 3.779e-05 deg
peri 104.20181946 3.9533e-05 deg
M 173.7237066967761 1.203e-05 deg
tp 2458171.097759036313
(2018-Feb-21.59775904)
5.3963e-05 TDB
period 1718.733801070044
4.71
1.5867e-05
4.344e-08
d
yr
n .2094565195470482 1.9336e-09 deg/d
Q 3.43428618055961 2.1136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      7461 days (20.43 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:30:15  

Additional Information
 Earth MOID = 1.17998 au 
 Jupiter MOID = 1.90651 au 
 T_jup = 3.275 
[ 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 15.4   n/a MPO412707  
diameter diameter 3.988 km 0.892 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.084   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91442 (1999 RD17)          Discovered 1999-Sep-07 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
1907-Feb-04 01:36 00:03 Jupiter 1.89621191863157 1.8962114766775 1.89621236058574 1.75379609208056 1.47730055199273 2417610.566994025 3.11103835241857 165.762027813958 72.7702568316488 -26.8741051457773 1102948.5951801 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
1930-Jun-25 07:26 00:02 Jupiter 1.9132355360522 1.91323494567786 1.91323612642599 2.10697601742921 1.88518256170483 2426152.809882699 2.33377285446542 96.1175222458649 46.7424377802088 69.2158905143969 1040471.32300385 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
1953-Nov-08 06:42 00:02 Jupiter 1.9656779258592 1.96567726465374 1.96567858706477 2.58364959786592 2.41110620654854 2434689.779243147 1.64867858271867 98.7913626401421 15.9138949369402 88.3977923721492 1524319.65052012 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
2109-Dec-05 23:39 00:03 Jupiter 1.97156539018084 1.97156460053999 1.97156617982024 1.51312050419303 1.19594945027946 2491695.485442000 2.53952820981817 164.226188105093 106.957994497255 24.4826159804192 1089421.49290796 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
2133-Apr-18 13:15 00:03 Jupiter 1.93074990822251 1.93074925463409 1.93075056180995 1.36552568055115 0.993608455273491 2500230.052363471 3.19618801888324 158.832397085 117.310629381339 -14.1281112045499 1691409.61103004 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
2156-Sep-05 04:45 00:04 Jupiter 1.91031730649862 1.91031685752532 1.91031775547192 1.40043463056566 1.03654710654619 2508770.697941414 3.95596237112945 323.508008234772 77.7694278327085 -33.3467625039572 2454047.83843509 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
2180-Jan-25 02:36 00:05 Jupiter 1.91164174371735 1.9116411346947 1.9116423527411 1.61144048133253 1.30788667885411 2517312.608591282 4.86506753311226 334.3538099407 60.1728251841453 -26.9548683328738 1442811.73542861 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 22:30:38 2020-Feb-23 22:30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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