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48 Doris (A857 SA)
Classification: Main-belt Asteroid          SPK-ID: 2000048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 171 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0722635740642559 2.808e-08  
a 3.109514976857461 7.2863e-09 au
q 2.884810311023409 8.6753e-08 au
i 6.547932948441979 3.0468e-06 deg
node 183.5526367646863 2.8409e-05 deg
peri 252.8414897414222 3.6585e-05 deg
M 141.5085436243186 2.3204e-05 deg
tp 2458213.241122216813
(2018-Apr-04.74112222)
0.00012887 TDB
period 2002.799186135091
5.48
7.0395e-06
1.927e-08
d
yr
n .1797484253499779 6.3178e-10 deg/d
Q 3.334219642691513 7.8128e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3106  
   data-arc span      58499 days (160.16 yr)  
   first obs. used      1860-02-27  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 00:57:14  

Additional Information
 Earth MOID = 1.90855 au 
 Jupiter MOID = 1.88457 au 
 T_jup = 3.205 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.1   n/a MPO473760 IRAS observations used: 10
diameter diameter 216.473 km 4.757 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.89 h n/a LCDB (Rev. 2019-August); 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 Bull. 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. (2016) Astron. Astrophys. 586, A108.]
[Viikinkoski, M.; Hanus, J.; Kaasalainen, M.; Marchis, F.; Durech, J. (2017) Astron. Astrophys. 607, A117.]
geometric albedo albedo 0.065   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.716   0.012 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=9; phase (min.=3.85, mean=7.88, max.=12.86) deg.
U-B UB 0.442   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A857 SA)          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 < 00:01 Jupiter 1.89714255323485 1.89714227998888 1.89714282648083 3.70026551410754 3.57757170557875 2433677.257408667 0.64528656197011 45.5633331711263 11.3212328899384 -87.1737130902094 5135549.98418176 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
1961-Mar-15 14:02 < 00:01 Jupiter 1.94382726429376 1.94382695369125 1.94382757489627 2.90325978175801 2.74907576854152 2437374.084695141 0.540105768378999 28.383482402735 8.474219944124 -75.0849572393411 4670838.22417442 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720506243663 1.91720479525173 1.91720532962154 3.95485910970102 3.84152433304665 2459833.979650271 0.225322657668957 29.4724439240162 11.4081400063229 -89.3429551186271 5401806.00197506 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
2032-Oct-31 20:24 < 00:01 Jupiter 1.91280628368187 1.9128059721593 1.91280659520445 2.99785751416825 2.8463162733656 2463537.349819459 0.349103965557984 28.7124014969185 9.81709554892068 -76.842389968069 4551894.15385366 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
2094-Apr-22 05:16 < 00:01 Jupiter 1.95512896053023 1.95512859242769 1.9551293286331 4.17311941722951 4.06798028859591 2485989.719181438 0.999657177000223 67.981736570352 11.673325362174 80.4887817996004 5524069.82813528 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
2104-Jun-19 08:22 00:01 Jupiter 1.89106925705667 1.89106894476465 1.8910695693487 3.19332558810358 3.04983851876199 2489699.848803711 1.17512286226528 60.7339153573705 10.9171751353142 -81.660318941246 4465512.86088975 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
2176-Feb-04 05:23 00:02 Jupiter 1.8743898005122 1.87438951186641 1.87439008915798 3.42419697699231 3.28958053955691 2515861.724165388 1.99154283448512 115.908555871174 11.4342818369484 -87.0216977016623 4583499.2535932 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57
2186-Mar-16 06:47 00:02 Jupiter 1.98250295405379 1.98250238989099 1.98250351821658 2.94586911288047 2.79707824667978 2519554.782298169 2.14800879861351 29.6972564442032 18.6459953382426 -56.273347372071 3602746.40221397 T 171 CATAB v2.0f-lin.ifort 2020-May-20 00:57:39 2020-May-20 00:57

Alternate Designations
 A857 SA = 1948 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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