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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 155 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07299487947254996 2.5697e-08  
a 3.111116521859301 7.8918e-09 au
q 2.884020946321122 8.0366e-08 au
i 6.547241555610912 2.9994e-06 deg
node 183.5657406014002 2.7406e-05 deg
peri 253.5004836562903 3.4094e-05 deg
M 249.3525084496447 2.0531e-05 deg
tp 2458216.544258836162
(2018-Apr-08.04425884)
0.00011466 JED
period 2004.346687607365
5.49
7.6265e-06
2.088e-08
d
yr
n .1796096464877243 6.8341e-10 deg/d
Q 3.338212097397479 8.4679e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2018  
   data-arc span      57023 days (156.12 yr)  
   first obs. used      1860-02-27  
   last obs. used      2016-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59777  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:25:00  

Additional Information
 Earth MOID = 1.90629 au 
 Jupiter MOID = 1.88592 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. 2016-February); 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. 586, A108.]
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 1.89714253099021 1.89714239897536 1.8971426630044 3.70026496937131 3.57757114069734 2433677.257367723 1.91800913588769 4.73359288552999 2.16559035630999 -32.3505332975553 5346100.62629217 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
1961-Mar-15 14:02 00:02 Jupiter 1.94382724747771 1.94382698348625 1.94382751146922 2.90325989806526 2.7490758900007 2437374.084645771 2.25695504440166 2.7548771953982 1.32480258283264 -1.21602300464496 5126915.17807381 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720505161429 1.91720486455335 1.91720523867477 3.95485880598702 3.84152401972311 2459833.979839821 0.663570809803138 3.34653903206928 1.88149574841659 -10.4391308112272 5864341.16382712 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
2032-Oct-31 20:24 00:01 Jupiter 1.91280619452401 1.91280593920323 1.91280644984325 2.99785767563874 2.84631643618144 2463537.350091010 1.43902078183375 2.98067706983517 1.39762771307669 -6.42516081683735 4915382.71146667 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
2094-Apr-22 05:16 00:03 Jupiter 1.95512911278536 1.95512785740647 1.95513036816475 4.17311972283223 4.06798061039058 2485989.719785972 2.82878255993533 6.29946091490653 2.86058210671734 -55.5282655522876 6158996.32175199 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
2104-Jun-19 08:23 00:04 Jupiter 1.89106916628161 1.89106894639862 1.89106938616661 3.19332635271283 3.04983931229444 2489699.849502880 4.31166050317003 5.95557592219181 2.10013916947688 -37.2643318781529 4790977.90443174 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
2176-Feb-04 05:24 00:07 Jupiter 1.87438977884709 1.87438967513166 1.87438988256957 3.42419831035156 3.28958192589216 2515861.725251497 6.63116232384691 11.144555020974 2.37348219211462 -46.4303775141124 4992919.87932786 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25
2186-Mar-16 06:48 00:09 Jupiter 1.98250260618115 1.98250257718939 1.98250263516982 2.94586880163419 2.79707789207374 2519554.783452853 9.33746361929929 3.01438831442806 1.43030360426696 9.08315558598378 5046710.77642291 T 155 CATAB v2.0c-linF95 2016-Apr-25 12:25:08 2016-Apr-25 12:25

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