Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
385518 (2004 HP54)
Classification: Outer Main-belt Asteroid          SPK-ID: 2385518
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730921978232382 5.8658e-08  
a 3.218790581389835 4.9159e-08 au
q 2.66164304532433 1.9542e-07 au
i 15.39423749575623 6.3132e-06 deg
node 67.05615706603059 2.8188e-05 deg
peri 200.3972476706885 4.1136e-05 deg
M 310.407730879227 3.7276e-05 deg
tp 2459687.068806135667
(2022-Apr-17.56880614)
0.00022291 TDB
period 2109.295905660094
5.77
4.8321e-05
1.323e-07
d
yr
n .1706730663222615 3.9099e-09 deg/d
Q 3.775938117455341 5.7668e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      6266 days (17.16 yr)  
   first obs. used      2004-03-23  
   last obs. used      2021-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60863  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 07:11:30  

Additional Information
 Earth MOID = 1.65165 au 
 Jupiter MOID = 1.32271 au 
 T_jup = 3.110 
[ 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 15.57   n/a MPCxxxxx  
diameter diameter 4.449 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

385518 (2004 HP54)          Discovered 2004-Apr-21 by CSS at Catalina
Reference: Last Updated: 2014-02-19

[ 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
2002-Aug-01 04:37 00:02 Jupiter 1.92116874203636 1.9211667030533 1.92117078102391 2.64737314739342 2.47523861915081 2452487.692059390 1.76636466126387 190.59089449944 42.0732590212883 -53.3583314598457 1530869.79391943 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2013-Aug-03 06:10 < 00:01 Jupiter 1.50431925585813 1.50431818464549 1.50432032708463 3.31597715277346 3.14158937457401 2456507.756928489 0.607338652780076 336.148201124399 32.9255044368411 -82.4960517502871 1810603.78107223 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2024-Nov-04 23:11 < 00:01 Jupiter 1.31461900770921 1.31461832752642 1.3146196878973 3.49430266532557 3.30477391091569 2460619.466098859 0.672967354546342 191.115807583584 17.6744059232764 -81.5526600601285 1961158.92225207 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2036-Feb-13 10:47 00:02 Jupiter 1.40385847959826 1.40385731453856 1.40385964465796 3.53238774055325 3.35723945263378 2464736.948962755 1.5215933234346 196.860738800121 58.5591672325839 -88.3671922217594 1949578.84759997 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2047-Mar-01 04:43 00:03 Jupiter 1.78791994573919 1.78791718955747 1.78792270224329 3.4233378644184 3.28203400933013 2468770.696782654 3.02914052912587 1382.50091772659 60.6767616220204 -84.6654338127921 1790225.54858463 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2156-Aug-08 22:23 00:08 Jupiter 1.78136859603196 1.78136207185483 1.7813751204347 2.61054494749959 2.42156259878491 2508743.432367539 7.91956615052232 1099.83516019544 52.0510226752161 -67.0445820277412 1163822.90164344 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2167-Sep-11 04:24 00:06 Jupiter 1.4375673355644 1.43756313238526 1.43757153924447 3.28160258678608 3.09685398984813 2512793.683596781 6.03954310489228 1432.38908848045 43.773805997207 -81.1748375923241 1653733.1559153 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2178-Dec-20 10:32 00:06 Jupiter 1.34041779801168 1.3404170721478 1.34041852388074 3.48609304742243 3.29985243269642 2516911.938707296 6.29679282698326 634.137228732294 33.9798635533021 89.8879788489031 2030984.59971163 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
2190-Mar-07 06:12 00:09 Jupiter 1.51786349241673 1.5178567102097 1.51787027462523 3.61072559796123 3.45271882608782 2521006.758164821 8.92052044391017 365.372904033293 256.715518802275 -34.0173722082895 620063.98707591 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 07:11:31 2021-Jul-09 07:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-25 14:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin