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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 144 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07368433228278833 2.5895e-08  
a 3.109134526038104 8.0485e-09 AU
q 2.880040024509623 8.1092e-08 AU
i 6.54782106901819 3.046e-06 deg
node 183.5815670075288 2.767e-05 deg
peri 253.541872590209 3.434e-05 deg
M 105.5257064086296 2.0437e-05 deg
tp 2456213.533298590913
(2012-Oct-13.03329859)
0.00011349 JED
period 2002.431632051989
5.48
7.7754e-06
2.129e-08
d
yr
n .1797814188697621 6.9809e-10 deg/d
Q 3.338229027566585 8.6415e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1856  
   data-arc span      56369 days (154.33 yr)  
   first obs. used      1860-02-27  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60354  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:53:22  

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 1.8971425676346 1.89714243362268 1.8971427016488 3.70026493519022 3.57757110775455 2433677.257278137 1.94135163284287 4.82611027027849 2.17730315327858 -32.0987647982638 5272560.76790937 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
1961-Mar-15 14:02 00:02 Jupiter 1.9438272916231 1.94382702273272 1.94382756051354 2.90326012631281 2.74907613464948 2437374.084573446 2.27665186536766 2.80110195479896 1.33993392220809 -1.50100919303107 5044326.64962388 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720509692522 1.91720490877421 1.91720528507725 3.95485889838751 3.84152411756771 2459833.979864141 0.672371694403184 3.36426587991108 1.90423445582953 -9.94551999828199 5812433.82017406 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
2032-Oct-31 20:24 00:01 Jupiter 1.91280622436722 1.91280596677377 1.91280648196152 2.99785793576728 2.84631671258678 2463537.350149367 1.46772938138932 3.00298758414929 1.42103388036842 -6.14727007194915 4868081.85394556 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
2094-Apr-22 05:17 00:03 Jupiter 1.95512918824758 1.95512792773634 1.95513044875934 4.1731200560881 4.06798095637012 2485989.719950720 2.86820830547917 6.35576344823875 2.89438028712455 -55.9334521600565 6109933.69527178 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
2104-Jun-19 08:24 00:04 Jupiter 1.89106919462435 1.89106897590215 1.89106941334809 3.19332677621967 3.0498397579273 2489699.849690255 4.37800354010249 5.99369976149655 2.1432282342325 -37.6505448448963 4736375.44434788 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
2176-Feb-04 05:25 00:07 Jupiter 1.87438982659258 1.87438972691035 1.874389926282 3.42419892071849 3.28958256473572 2515861.725562702 6.72746716994346 11.2584808161129 2.41448338739087 -46.6841407031283 4928511.5037712 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53
2186-Mar-16 06:49 00:09 Jupiter 1.98250252353752 1.98250250290307 1.9825025441689 2.94586881814649 2.79707790309686 2519554.783797798 9.47958213874655 3.07808611999374 1.44966322392388 9.32002213700782 4956257.02333019 T 144 CATAB v2.0c-linF95 2014-Jul-14 11:53:30 2014-Jul-14 11:53

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