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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 146 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07354021636271131 2.5867e-08  
a 3.109449043532428 7.9834e-09 AU
q 2.880779488102228 8.0937e-08 AU
i 6.54747121894038 3.0455e-06 deg
node 183.5798781451377 2.7649e-05 deg
peri 253.5676789214222 3.4348e-05 deg
M 141.4663127625182 2.0494e-05 deg
tp 2456213.501098117712
(2012-Oct-13.00109812)
0.00011375 JED
period 2002.735486244256
5.48
7.7129e-06
2.112e-08
d
yr
n .1797541425079108 6.9227e-10 deg/d
Q 3.338118598962629 8.5705e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1874  
   data-arc span      56388 days (154.38 yr)  
   first obs. used      1860-02-27  
   last obs. used      2014-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60085  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:42:34  

Additional Information
 Earth MOID = 1.90435 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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]
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 18:10 00:02 Jupiter 1.89714256750267 1.89714243345278 1.89714270155483 3.70026491419649 3.57757108603214 2433677.257274935 1.94064512247569 4.82439431526006 2.17659685589096 -32.0912476752908 5273748.03894216 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
1961-Mar-15 14:02 00:02 Jupiter 1.94382729110432 1.94382702244334 1.94382755976648 2.90326012525613 2.74907613349125 2437374.084574852 2.27610256583403 2.79862706783602 1.33986702065537 -1.49786614997089 5048751.37707336 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720509702638 1.91720490886497 1.91720528518764 3.95485888642316 3.84152410525645 2459833.979862139 0.672151096889513 3.36413928394671 1.90317365619782 -9.94235020897512 5812805.07511853 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
2032-Oct-31 20:24 00:01 Jupiter 1.9128062245394 1.91280596701223 1.91280648206637 2.99785793012699 2.8463167066602 2463537.350146967 1.46692093304693 3.00210754499188 1.42045657018788 -6.16960783870671 4870200.94214243 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
2094-Apr-22 05:17 00:03 Jupiter 1.9551291881095 1.95512792799651 1.955130448223 4.17312001191008 4.06798091104278 2485989.719940696 2.86709793981709 6.35308312021421 2.89410909846404 -55.9332110025461 6110668.29105289 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
2104-Jun-19 08:24 00:04 Jupiter 1.8910691951143 1.89106897633447 1.89106941389488 3.19332675455418 3.04983973528056 2489699.849683971 4.37614474270823 5.99293595851697 2.14175670175299 -37.6395010724156 4738301.8359995 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
2176-Feb-04 05:25 00:07 Jupiter 1.87438982668384 1.87438972688662 1.87438992648824 3.42419887602069 3.28958251821549 2515861.725551206 6.72475761113984 11.2552672558293 2.41345832901477 -46.6774980148272 4930080.75432571 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42
2186-Mar-16 06:49 00:09 Jupiter 1.98250252468471 1.98250250383759 1.98250254552642 2.94586882595225 2.79707791140625 2519554.783790568 9.47542340235018 3.07397336213424 1.44955073024111 9.31248970997998 4961898.5478933 T 146 CATAB v2.0c-linF95 2015-Jan-07 23:42:41 2015-Jan-07 23:42

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