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JPL Small-Body Database Browser
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108257 (2001 HN50)
Classification: Main-belt Asteroid          SPK-ID: 2108257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1571372921454151 5.3878e-08  
a 2.804143656832785 1.8335e-08 au
q 2.36350811581134 1.5416e-07 au
i 9.877724770131136 4.9882e-06 deg
node 72.87732845188665 3.7199e-05 deg
peri 251.3028705870776 4.0941e-05 deg
M 302.4966692644232 1.8305e-05 deg
tp 2459274.461361103913
(2021-Feb-28.96136110)
8.819e-05 TDB
period 1715.136997036408
4.70
1.6822e-05
4.606e-08
d
yr
n .2098957696219284 2.0586e-09 deg/d
Q 3.244779197854231 2.1216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:05:09  

Additional Information
 Earth MOID = 1.37359 au 
 Jupiter MOID = 2.11752 au 
 T_jup = 3.284 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456807.5 (2014-May-30.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1556995415776067 5.3943e-08  
q 2.36765281364467 1.54e-07 au
tp 2457561.748887488162
(2016-Jun-22.24888749)
8.3892e-05 TDB
node 72.89460672073876 3.719e-05 deg
peri 251.6589838494801 4.0994e-05 deg
i 9.87771401488936 4.9884e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:05:09  

Additional Information
 Jupiter MOID = 2.11752 au 
 T_jup = 3.284 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.909877547457245E-15 -8.264334224869105E-15 1.456465751258139E-12 3.494646279656936E-15 3.434129544509027E-13 -4.675751527290149E-15
q -8.264334224869105E-15 2.371448752352401E-14 -3.843772533956915E-12 -1.579465352852342E-14 -9.4179409602583E-13 1.414016374754163E-14
tp 1.456465751258139E-12 -3.843772533956915E-12 7.037922611705224E-9 8.533451262151597E-12 1.495639126303306E-9 -4.287836215492327E-12
node 3.494646279656936E-15 -1.579465352852342E-14 8.533451262151597E-12 1.383120970841597E-9 -1.360414146244671E-9 -4.316257659792805E-11
peri 3.434129544509027E-13 -9.4179409602583E-13 1.495639126303306E-9 -1.360414146244671E-9 1.680542399263413E-9 4.149141043939557E-11
i -4.675751527290149E-15 1.414016374754163E-14 -4.287836215492327E-12 -4.316257659792805E-11 4.149141043939557E-11 2.488365836760161E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO338031  
diameter diameter 3.706 km 0.552 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.245   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108257 (2001 HN50)          Discovered 2001-Apr-22 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 HN50 = 2002 RY124 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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