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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
48 Doris
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 169 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07226357604627318 2.8749e-08  
a 3.109514977538235 7.5364e-09 au
q 2.884810305491875 8.9202e-08 au
i 6.547932234891164 3.087e-06 deg
node 183.5526500921855 2.942e-05 deg
peri 252.8414787765827 3.7876e-05 deg
M 141.5085408989962 2.3713e-05 deg
tp 2458213.241137120149
(2018-Apr-04.74113712)
0.00013182 TDB
period 2002.799186792808
5.48
7.2811e-06
1.993e-08
d
yr
n .1797484252909488 6.5347e-10 deg/d
Q 3.334219649584595 8.081e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2930  
   data-arc span      58388 days (159.86 yr)  
   first obs. used      1860-02-27  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52217  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:13:13  

Additional Information
 Earth MOID = 1.90855 au 
 Jupiter MOID = 1.88457 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2453574.5 (2005-Jul-23.0) TDB
Reference: JPL 169 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07492897666872525 2.8893e-08  
q 2.876095490799926 9.0219e-08 au
tp 2454234.406938240781
(2007-May-13.90693824)
0.0001281 TDB
node 183.7558139047825 2.9347e-05 deg
peri 257.8964918581955 3.7156e-05 deg
i 6.554636233396055 3.0921e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2930  
   data-arc span      58388 days (159.86 yr)  
   first obs. used      1860-02-27  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52217  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:13:13  

Additional Information
 Jupiter MOID = 1.88457 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.348102006230654E-16 -2.59818299557404E-15 4.279000576796666E-13 1.785225217092893E-15 8.86163932192037E-14 5.540546738231865E-16
q -2.59818299557404E-15 8.139387174057832E-15 -1.552902801591663E-12 -4.629349739662074E-15 -3.197180854552872E-13 -1.639484340464706E-15
tp 4.279000576796666E-13 -1.552902801591663E-12 1.641031699417723E-8 -1.462785339796441E-11 2.936805908215327E-9 2.238350734036098E-12
node 1.785225217092893E-15 -4.629349739662074E-15 -1.462785339796441E-11 8.61235619933032E-10 -8.577571485838302E-10 -1.351097555631812E-11
peri 8.86163932192037E-14 -3.197180854552872E-13 2.936805908215327E-9 -8.577571485838302E-10 1.380569204621386E-9 1.384471950223336E-11
i 5.540546738231865E-16 -1.639484340464706E-15 2.238350734036098E-12 -1.351097555631812E-11 1.384471950223336E-11 9.561318842177837E-12

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          Discovered 1857-Sep-19 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 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 2020-Feb-20 23:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin