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108261 (2001 HX51)
Classification: Main-belt Asteroid          SPK-ID: 2108261
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09090488898519891 4.1956e-08  
a 3.104900208768388 2.8644e-08 au
q 2.822649599980176 1.416e-07 au
i 21.0611042655255 5.2712e-06 deg
node 208.8860971365981 1.2104e-05 deg
peri 254.3582987111184 3.0943e-05 deg
M 282.3020431777844 2.9173e-05 deg
tp 2459431.797553336568
(2021-Aug-05.29755334)
0.0001635 TDB
period 1998.342370268998
5.47
2.7654e-05
7.571e-08
d
yr
n .1801493104264912 2.493e-09 deg/d
Q 3.387150817556599 3.1248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      591  
   data-arc span      8024 days (21.97 yr)  
   first obs. used      1998-11-10  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52376  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:19:03  

Additional Information
 Earth MOID = 1.91637 au 
 Jupiter MOID = 1.93144 au 
 T_jup = 3.112 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457883.5 (2017-May-10.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08786671644869617 4.182e-08  
q 2.837351664950913 1.4068e-07 au
tp 2457432.907327050900
(2016-Feb-14.40732705)
0.00016498 TDB
node 208.9223393598286 1.2084e-05 deg
peri 254.7455839852141 3.1936e-05 deg
i 21.06475114428971 5.274e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      591  
   data-arc span      8024 days (21.97 yr)  
   first obs. used      1998-11-10  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52376  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:19:03  

Additional Information
 Jupiter MOID = 1.93144 au 
 T_jup = 3.112 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.748953378947641E-15 -5.792009822387372E-15 -8.798928928530837E-13 -8.189785471320595E-16 -1.457226401624462E-13 -1.579442144459331E-15
q -5.792009822387372E-15 1.979067740529733E-14 3.082458741619962E-12 1.317653733776256E-15 5.363289676671645E-13 7.223359444093455E-15
tp -8.798928928530837E-13 3.082458741619962E-12 2.721925165815885E-8 8.207034276343978E-12 4.896670728272162E-9 1.327932317589085E-11
node -8.189785471320595E-16 1.317653733776256E-15 8.207034276343978E-12 1.460125945964075E-10 -1.345808274471718E-10 -4.407603733902104E-12
peri -1.457226401624462E-13 5.363289676671645E-13 4.896670728272162E-9 -1.345808274471718E-10 1.019877676896375E-9 6.506933774232492E-12
i -1.579442144459331E-15 7.223359444093455E-15 1.327932317589085E-11 -4.407603733902104E-12 6.506933774232492E-12 2.781535727745855E-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 14.6   n/a MPO453540  
diameter diameter 7.910 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108261 (2001 HX51)          Discovered 2001-Apr-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1916-May-11 21:58 00:04 Jupiter 1.96790428039468 1.96790382038083 1.9679047404092 6.73140858562815 6.66716014789058 2420995.414993130 3.69851819082757 554.466732133033 22.4139075101656 -89.5750254402196 4163858.53114758 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 19:19:05 2020-Nov-12 19:19
1987-Jul-13 04:04 00:01 Jupiter 1.96084929630747 1.96084882883338 1.9608497637819 6.72591873276889 6.66138487594245 2446989.669571349 1.12543581172883 177.408222234694 22.3811675896047 88.6546862358983 4123000.91908044 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 19:19:05 2020-Nov-12 19:19
2058-Sep-12 15:41 00:01 Jupiter 1.95300298310895 1.9530024867986 1.95300347942096 6.72419960677957 6.65938849343716 2472984.153747325 1.46382030534082 219.263405147909 22.0366436275942 -87.1440230581937 4136328.42438015 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 19:19:05 2020-Nov-12 19:19
2129-Nov-14 02:57 00:04 Jupiter 1.9428948299203 1.942894347627 1.94289531222388 6.72202930008474 6.65685810887567 2498978.623118158 4.02767703541609 606.128883914253 21.8914185788752 -89.0110988471736 4105844.19179146 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 19:19:05 2020-Nov-12 19:19

Alternate Designations
 2001 HX51 = 1998 VP19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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