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48 Doris
Classification: Main-belt Asteroid          SPK-ID: 2000048
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 154 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07316161906050961 2.5741e-08  
a 3.110547402710373 7.9043e-09 au
q 2.88297471856362 8.0494e-08 au
i 6.547059804490168 3.0113e-06 deg
node 183.5686581340088 2.7452e-05 deg
peri 253.5846966548285 3.4137e-05 deg
M 213.3441660766267 2.0502e-05 deg
tp 2458216.801333582164
(2018-Apr-08.30133358)
0.00011456 JED
period 2003.79672753505
5.49
7.6379e-06
2.091e-08
d
yr
n .1796589419740446 6.8481e-10 deg/d
Q 3.338120086857127 8.4826e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2009  
   data-arc span      56841 days (155.62 yr)  
   first obs. used      1860-02-27  
   last obs. used      2015-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59291  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 15:46:59  

Additional Information
 Earth MOID = 1.90619 au 
 Jupiter MOID = 1.88677 au 
 T_jup = 3.205 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.90 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
diameter diameter 221.80 km 7.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
rotation period rot_per 11.89 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Debehogne, H.; Lagerkvist, C.-I.; Zappala, V. (1982) Astron. Astrophys. Suppl. Ser. 50, 277-281.]
[Schober, H.J.; Schroll, A. (1982) Astron. Astrophys. 107, 402-405.]
[Higgins, D.; Pilcher, F. (2009) Minor Planet Bul. 36, 143-144.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys., in press.arXiv:1510.07422]
geometric albedo albedo 0.0624   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
B-V BV .716 mag .012 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=3.85, mean=7.88, max.=12.86) deg.
U-B UB .442 mag .016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=3.85, mean=7.88, max.=12.86) deg.
Tholen spectral type spec_T CG   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 6 color indices
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

48 Doris          Discovered 1857-Sep-19 by Goldschmidt, H. at Paris
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
1951-Jan-30 18:11 00:02 Jupiter 1.89714253964371 1.89714240708642 1.89714267220325 3.70026490592723 3.57757107564667 2433677.257349834 1.92465778596209 4.75840662062562 2.16755069205981 -32.3007901243707 5329492.10869291 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
1961-Mar-15 14:02 00:02 Jupiter 1.94382724943521 1.94382698446068 1.94382751440799 2.90325992354963 2.74907591707401 2437374.084630299 2.26296627361281 2.76361990201278 1.32917370227976 -1.28537328202122 5111135.58277092 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720506205988 1.91720487466859 1.91720524945135 3.95485881955475 3.84152403431773 2459833.979851614 0.666426893258078 3.35142374538868 1.88709904654179 -10.3451788728867 5851537.57513607 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
2032-Oct-31 20:24 00:01 Jupiter 1.91280619680446 1.91280594098783 1.9128064526213 2.99785768661372 2.84631644792622 2463537.350100217 1.44721174762316 2.9849886303228 1.4044485072505 -6.40421913419525 4906734.80192089 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
2094-Apr-22 05:17 00:03 Jupiter 1.95512912738523 1.95512787059192 1.95513038417906 4.17311980148504 4.06798069187148 2485989.719825708 2.84064470937657 6.31609450490112 2.86979183569701 -55.6483895431276 6145947.18637143 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
2104-Jun-19 08:23 00:04 Jupiter 1.89106917083408 1.8910689512054 1.89106939046354 3.19332635027419 3.04983931009462 2489699.849529135 4.33114665086709 5.96956371250823 2.10945296404386 -37.3782727609282 4780614.8336307 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
2176-Feb-04 05:24 00:07 Jupiter 1.87438978858963 1.87438968590448 1.87438989128184 3.42419840052202 3.28958202046659 2515861.725317741 6.65957684866305 11.1809395656111 2.38199131476975 -46.4972321608346 4980235.57352623 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59
2186-Mar-16 06:48 00:09 Jupiter 1.98250258227832 1.98250255536432 1.98250260919908 2.94586879786309 2.79707788626036 2519554.783516005 9.37867450852629 3.02687639751218 1.43575871460594 9.14680236537422 5028792.21266845 T 154 CATAB v2.0c-linF95 2015-Dec-18 11:59:02 2015-Dec-18 11:59

Alternate Designations
 1948 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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