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243915 (2001 HE57)
Classification: Main-belt Asteroid          SPK-ID: 2243915
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 .3307187217313841 3.9441e-08  
a 3.181036553966144 2.744e-08 au
q 2.129008211057654 1.224e-07 au
i 24.23944766180465 8.1191e-06 deg
node 177.4467528118063 1.2013e-05 deg
peri 100.6677462660317 1.7104e-05 deg
M 94.360066605548 1.2411e-05 deg
tp 2458457.328275094955
(2018-Dec-04.82827510)
6.827e-05 TDB
period 2072.294223606652
5.67
2.6813e-05
7.341e-08
d
yr
n .1737205054663766 2.2478e-09 deg/d
Q 4.233064896874635 3.6514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      7158 days (19.60 yr)  
   first obs. used      2001-03-16  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:53:36  

Additional Information
 Earth MOID = 1.26038 au 
 Jupiter MOID = 1.88022 au 
 T_jup = 2.981 
[ 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 15.1   n/a MPO440241  
diameter diameter 8.017 km 3.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.040   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243915 (2001 HE57)          Discovered 2001-Apr-25 by LONEOS at Anderson Mesa
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ 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
1929-May-24 15:01 00:03 Jupiter 1.92798928402062 1.92798704963613 1.92799151842779 6.28411779824772 6.213813447196 2425756.125600999 2.59933713136415 403.890818237803 55.6654362315313 76.1639859494865 1437016.27874073 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 00:53:37 2020-Nov-12 00:53
1940-Sep-23 13:49 00:02 Jupiter 1.84392087954755 1.8439199637333 1.84392179536181 6.65801939501453 6.58866476053477 2429896.075440773 1.99853590082329 385.647788671818 44.1320891962151 89.7915691716283 1791244.15178846 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 00:53:37 2020-Nov-12 00:53
1951-Dec-26 11:03 00:02 Jupiter 1.97444893870661 1.97444746790738 1.97445040952325 7.34205280873806 7.28338902800538 2434006.960196624 1.7447886776179 343.613721759389 34.651307649932 -79.3351854358058 2342049.58755866 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 00:53:37 2020-Nov-12 00:53
2063-Jan-05 23:29 00:02 Jupiter 1.98996116431479 1.98996010593547 1.9899622226966 6.17425073795719 6.1049223296791 2474560.478728768 1.63345088804808 291.662139915934 46.5803183727047 -85.991728581312 1834457.49958578 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 00:53:37 2020-Nov-12 00:53
2074-May-02 08:12 00:02 Jupiter 1.94160441547847 1.94160300564494 1.9416058253172 5.83695988182294 5.7617361224678 2478694.841381283 2.16003274361266 328.096079156333 58.1592877137094 83.72436828905 1532671.25941055 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 00:53:37 2020-Nov-12 00:53
2094-Dec-19 04:44 00:04 Jupiter 1.9267370691609 1.92673614254439 1.92673799579055 6.59422120511257 6.52721405370152 2486230.697466370 4.02183841543023 680.692267762156 41.7050310674632 88.2780780196324 1757695.12865835 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 00:53:37 2020-Nov-12 00:53

Alternate Designations
 2001 HE57 = 2002 RY85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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