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239 Adrastea (A884 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356221742942561 1.5666e-08  
a 2.965271494421871 9.0282e-09 au
q 2.266587777533411 4.7545e-08 au
i 6.176573315813745 8.0296e-07 deg
node 180.6211845481658 2.1293e-06 deg
peri 209.9174245945517 5.2631e-06 deg
M 182.4992257768243 7.4688e-06 deg
tp 2460120.087103103155
(2023-Jun-24.58710310)
4.1543e-05 TDB
period 1865.069933164897
5.11
8.5177e-06
2.332e-08
d
yr
n .1930222527308156 8.8153e-10 deg/d
Q 3.66395521131033 1.1155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3289  
   data-arc span      49887 days (136.58 yr)  
   first obs. used      1884-08-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:05:38  

Additional Information
 Earth MOID = 1.27307 au 
 Jupiter MOID = 1.79142 au 
 T_jup = 3.214 
[ 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 10.51   n/a E2021B10  
diameter diameter 37.609 km 0.415 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.4707 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Uzpen, B.; Kipp, S. (2003) Minor Planet Bull. 30, 59-61.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Carbo, L.; Green, D.; Kragh, K.; Krotz, J.; et al. (2009) Minor Planet Bull. 36, 152-157.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.095   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

239 Adrastea (A884 QA)          Discovered 1884-Aug-18 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1969-Mar-18 23:06 < 00:01 Jupiter 1.91397996577185 1.91397963706227 1.91398029448143 2.13719194454471 1.91898388464846 2440299.462494489 0.641089841744786 33.8729142982166 5.25335061287615 83.2501621814855 6545496.68641064 T 43 CATAB v2.0g-lin.ifort 2021-May-03 18:07:23 2021-May-03 18:07
2005-Apr-18 00:40 < 00:01 Jupiter 1.83366072030008 1.83366055368205 1.83366088691812 1.94243190177645 1.68795204712644 2453478.527823559 0.133170086344781 11.6198787517821 6.11483536030142 -88.0497015730174 9657964.49817596 T 43 CATAB v2.0g-lin.ifort 2021-May-03 18:07:23 2021-May-03 18:07
2041-May-11 21:27 < 00:01 Jupiter 1.78903293248209 1.78903278067415 1.78903308428992 1.79327352144258 1.50629495095336 2466651.393814526 0.391943961255296 26.2632929032748 8.27034976491218 -89.3122783577342 8822590.6935359 T 43 CATAB v2.0g-lin.ifort 2021-May-03 18:07:23 2021-May-03 18:07
2077-Jun-01 23:01 < 00:01 Jupiter 1.7933208605713 1.79332072905164 1.79332099209106 1.69734558751037 1.39152459648249 2479821.458782349 0.921335594827077 57.8293226021736 10.9650864493961 -79.7039489156266 8908696.62148419 T 43 CATAB v2.0g-lin.ifort 2021-May-03 18:07:23 2021-May-03 18:07
2113-Jun-30 12:54 00:02 Jupiter 1.83782977428749 1.83782942605905 1.83783012251677 1.66827332693906 1.36432109768752 2492998.037834403 1.50208002589415 74.1355600212844 11.49472937382 -84.5354683881053 9074032.1830896 T 43 CATAB v2.0g-lin.ifort 2021-May-03 18:07:23 2021-May-03 18:07
2149-Aug-07 05:33 00:02 Jupiter 1.91504136740913 1.91504066010204 1.91504207471623 1.81943805154324 1.55748358635084 2506184.731169857 2.1106381784019 58.4699320776982 8.52071759272593 72.5366747530022 7041299.0668824 T 43 CATAB v2.0g-lin.ifort 2021-May-03 18:07:23 2021-May-03 18:07

Alternate Designations
 A884 QA = 1955 MK1 = 1956 UJ = A915 TD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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