Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 176 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07202353653633881 1.5207e-08  
a 3.110067752443017 5.8371e-09 au
q 2.886069674044448 4.7988e-08 au
i 6.547497123955157 2.7996e-07 deg
node 183.5456950458859 2.8418e-06 deg
peri 252.768381132761 1.5759e-05 deg
M 177.5538392370464 1.716e-05 deg
tp 2458212.445799432546
(2018-Apr-03.94579943)
9.4169e-05 TDB
period 2003.333263491986
5.48
5.6399e-06
1.544e-08
d
yr
n .1797005054328746 5.059e-10 deg/d
Q 3.334065830841586 6.2575e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      58825 days (161.05 yr)  
   first obs. used      1860-02-27  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:46:16  

Additional Information
 Earth MOID = 1.9093 au 
 Jupiter MOID = 1.88385 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457244.5 (2015-Aug-10.0) TDB
Reference: JPL 176 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07328967243674162 1.518e-08  
q 2.882239402894697 4.7952e-08 au
tp 2458216.702076806745
(2018-Apr-08.20207681)
9.2954e-05 TDB
node 183.5737477568055 2.8424e-06 deg
peri 253.5929234615544 1.5568e-05 deg
i 6.547041049363266 2.7999e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3458  
   data-arc span      58825 days (161.05 yr)  
   first obs. used      1860-02-27  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:46:16  

Additional Information
 Jupiter MOID = 1.88385 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.304376970805698E-16 -7.232257327976634E-16 -2.749280019257338E-13 2.236555113486925E-14 -6.302563642647492E-14 5.118848413850275E-16
q -7.232257327976634E-16 2.299424666884237E-15 1.085262448203676E-12 -7.114390735888508E-14 2.309709329837115E-13 -1.591210288249233E-15
tp -2.749280019257338E-13 1.085262448203676E-12 8.640482980906245E-9 -7.167204076161781E-11 1.425507197075188E-9 -1.799059492352061E-12
node 2.236555113486925E-14 -7.114390735888508E-14 -7.167204076161781E-11 8.079191986039046E-12 -1.869531407532527E-11 3.639131701451614E-13
peri -6.302563642647492E-14 2.309709329837115E-13 1.425507197075188E-9 -1.869531407532527E-11 2.423604983449337E-10 -6.629155357317109E-13
i 5.118848413850275E-16 -1.591210288249233E-15 -1.799059492352061E-12 3.639131701451614E-13 -6.629155357317109E-13 7.839345538858009E-14

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 7.18   n/a E2021B10 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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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 1.897142533065 1.89714233344263 1.89714273268737 3.70026567524927 3.57757187160949 2433677.257598888 0.518012930152785 32.0851564958579 7.24622801116443 84.5082342949025 9153940.27530424 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
1961-Mar-15 14:02 < 00:01 Jupiter 1.94382741018707 1.94382727522967 1.94382754514447 2.90326101979626 2.74907708878845 2437374.084856243 0.452759316408062 9.17932865760348 4.08483298729289 -80.2024923368597 10368459.5643754 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
2022-Sep-11 11:31 < 00:01 Jupiter 1.91720494666372 1.91720477315562 1.91720512017182 3.95485839676818 3.84152359277097 2459833.979662071 0.146189929547276 11.2491983765151 4.94026237033918 -56.8660093725614 12575501.4229726 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
2032-Oct-31 20:24 < 00:01 Jupiter 1.91280639630876 1.91280623252694 1.91280656009059 2.9978585310446 2.84631735440142 2463537.349867662 0.203775697080377 7.06649711855778 4.04935352021713 -43.4678177758406 9736390.89926445 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
2094-Apr-22 05:16 < 00:01 Jupiter 1.95512883772079 1.95512865242723 1.95512902301447 4.17311850250522 4.06797934412885 2485989.719300560 0.713845245808023 44.8146689165993 7.28479206877435 85.5774848415324 9868240.78078719 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
2104-Jun-19 08:22 < 00:01 Jupiter 1.89106931995494 1.8910691227457 1.89106951716429 3.19332639796812 3.04983937242461 2489699.848950892 0.820282071253011 37.0598635120439 5.26148674702646 -77.5477764339254 10393526.8938854 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
2176-Feb-04 05:23 00:01 Jupiter 1.87438981258421 1.87438963286977 1.87438999229897 3.42419745338627 3.28958103708951 2515861.724435335 1.4307616999832 79.7120572766098 6.04417975746848 -84.7263350782791 10235809.4658241 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48
2186-Mar-16 06:47 00:02 Jupiter 1.98250310690951 1.98250274734272 1.98250346647629 2.94587034715014 2.79707955922761 2519554.782611733 1.53469254616462 14.7209926870545 3.73001707235655 -9.04351960285737 6078565.73049628 T 176 CATAB v2.0g-lin.ifort 2021-May-03 17:48:54 2021-May-03 17:48

Alternate Designations
 A857 SA = 1948 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-23 00:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin