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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 140 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07368435508410744 3.1981e-08  
a 3.109134525924595 7.4685e-09 AU
q 2.880039953512109 1.001e-07 AU
i 6.547822542112456 3.5885e-06 deg
node 183.5815978017182 3.3117e-05 deg
peri 253.5418233278376 4.2415e-05 deg
M 105.5257254583325 2.7535e-05 deg
tp 2456213.533192662702
(2012-Oct-13.03319266)
0.00015259 JED
period 2002.431631942331
5.48
7.2151e-06
1.975e-08
d
yr
n .1797814188796074 6.4778e-10 deg/d
Q 3.338229098337081 8.0188e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1763  
   data-arc span      56288 days (154.11 yr)  
   first obs. used      1860-02-27  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62696  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:34:00  

Additional Information
 Earth MOID = 1.9031 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. 2013-Sep-12) 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 1.89714267926178 1.89714245715303 1.89714290137264 3.70026533789494 3.57757153161318 2433677.257250191 1.67984288657659 4.83562000901521 2.56886556587577 -21.2654169167707 4192010.28110605 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
1961-Mar-15 14:02 00:02 Jupiter 1.94382732532532 1.9438269977959 1.94382765285179 2.90326000928579 2.74907601380714 2437374.084555443 1.99157466042087 3.48946941588783 1.52947190292258 0.982164172846014 4047082.7236083 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720520788145 1.91720495605212 1.91720545971112 3.95485963324343 3.84152488075964 2459833.979885053 0.77269463345401 4.42975292138154 2.19197052688357 -10.5509875652692 4495834.13950079 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
2032-Oct-31 20:24 00:02 Jupiter 1.91280628400737 1.91280595285769 1.91280661515816 2.99785789646442 2.84631667604214 2463537.350165613 1.50204981731513 3.86725421873682 1.58772874173835 -4.50826365199569 3763145.08608062 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
2094-Apr-22 05:17 00:03 Jupiter 1.95512930127268 1.95512921312586 1.95512938942164 4.17312093748812 4.06798186670697 2485989.719994842 2.74799559105254 6.69365703497304 3.44219872081534 -47.154786696313 4814267.02670899 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
2104-Jun-19 08:24 00:04 Jupiter 1.89106927329679 1.89106897176851 1.8910695748271 3.1933269369639 3.04983993234391 2489699.849745077 4.12622574365696 6.37380425124542 2.48504090838054 -30.1974351292467 3672411.39941094 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
2176-Feb-04 05:25 00:06 Jupiter 1.87438992188108 1.87438973351571 1.87439011025544 3.42419936291361 3.28958303200988 2515861.725657993 6.26086252893625 10.9883864437779 2.96274756490521 -43.0151021770976 3841630.42630287 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34
2186-Mar-16 06:49 00:09 Jupiter 1.98250248251191 1.98250231508644 1.9825026499346 2.94586852380949 2.79707758994162 2519554.783888679 8.77989348532753 3.55970532292934 1.64555646634214 5.6692963695789 4175447.32884509 T 140 CATAB v2.0c-linF95 2014-Apr-17 13:34:07 2014-Apr-17 13:34

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