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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 148 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07354021709739163 2.5807e-08  
a 3.109449043342599 7.9739e-09 AU
q 2.880779485641907 8.0728e-08 AU
i 6.54747117496046 3.0432e-06 deg
node 183.5798798026623 2.756e-05 deg
peri 253.5676771094151 3.4266e-05 deg
M 141.4663130374912 2.0481e-05 deg
tp 2456213.501096660063
(2012-Oct-13.00109666)
0.00011367 JED
period 2002.735486060858
5.48
7.7038e-06
2.109e-08
d
yr
n .1797541425243716 6.9145e-10 deg/d
Q 3.33811860104329 8.5603e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1897  
   data-arc span      56565 days (154.87 yr)  
   first obs. used      1860-02-27  
   last obs. used      2015-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59813  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:25:30  

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 LCDB (Rev. 2015-Feb); 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]
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 1.89714256991884 1.89714243586346 1.89714270397541 3.70026488169395 3.57757105257386 2433677.257271242 1.93885263070835 4.81851215401042 2.1736262743859 -32.0976409793082 5281185.02959622 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
1961-Mar-15 14:02 00:02 Jupiter 1.94382728984362 1.94382702196364 1.94382755772478 2.90326011235852 2.74907611976746 2437374.084571172 2.27481004013575 2.78992455203854 1.33932048024431 -1.49064965770957 5064405.9324375 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720509911646 1.91720491097045 1.91720528726233 3.95485895482445 3.84152417580113 2459833.979874119 0.671565414258219 3.36319373972469 1.89878957963182 -9.96182556277389 5816131.57723409 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
2032-Oct-31 20:24 00:01 Jupiter 1.91280622502558 1.91280596780168 1.91280648224968 2.99785790387571 2.84631667905081 2463537.350141534 1.46453153771581 2.99778153698513 1.4185691981296 -6.25232964992744 4879690.62140309 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
2094-Apr-22 05:17 00:03 Jupiter 1.95512918885421 1.95512792965995 1.95513044804899 4.17312003357448 4.06798093330767 2485989.719939712 2.86422119442963 6.34617585463711 2.89216476499425 -55.9169491191135 6114146.44654174 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
2104-Jun-19 08:24 00:04 Jupiter 1.89106919663546 1.89106897777071 1.89106941550225 3.19332672160431 3.04983970089862 2489699.849676512 4.3711620582548 5.99108268438256 2.13567624743185 -37.6164253788083 4747853.24755193 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
2176-Feb-04 05:25 00:07 Jupiter 1.8743898287736 1.87438972868276 1.87438992887162 3.42419887965975 3.28958252215662 2515861.725549646 6.71763225632715 11.2474232185126 2.40818054429983 -46.6569956181725 4939056.01356627 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25
2186-Mar-16 06:49 00:09 Jupiter 1.98250252377518 1.98250250250335 1.98250254504771 2.94586880610357 2.79707789043163 2519554.783789087 9.46437639430348 3.06165522512636 1.44871058848602 9.30025160552941 4979532.98165274 T 148 CATAB v2.0c-linF95 2015-Mar-09 13:25:37 2015-Mar-09 13:25

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