Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
451 Patientia (1899 EY)
Classification: Main-belt Asteroid          SPK-ID: 2000451
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 91 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07601512191159432 2.7127e-08  
a 3.060199579345926 7.2423e-09 AU
q 2.827578135248136 8.262e-08 AU
i 15.24043263807169 3.2449e-06 deg
node 89.25829970970175 1.2057e-05 deg
peri 337.1952962857708 2.2081e-05 deg
M 168.7461542169318 1.8772e-05 deg
tp 2456083.953640656491
(2012-Jun-05.45364066)
0.00010129 JED
period 1955.343461869282
5.35
6.9413e-06
1.9e-08
d
yr
n .1841108772040717 6.5357e-10 deg/d
Q 3.292821023443716 7.7928e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2187  
   data-arc span      41845 days (114.57 yr)  
   first obs. used      1899-12-07  
   last obs. used      2014-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5362  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:52:31  

Additional Information
 Earth MOID = 1.84757 AU 
 T_jup = 3.176 
[ 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 6.65 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
magnitude slope G 0.19   n/a PDS3 (MPC 17258) Fit
diameter diameter 224.96 km 4.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 9.727 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Michalowski, T.; Kaasalainen, M.; Marciniak, A.; Denchev, P.; et al. (2005) Astron. Astrophys. 443, 329-335.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0764   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV .666 mag .010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=1.70, mean=9.61, max.=18.97) deg.
U-B UB .310 mag .044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=1.70, mean=9.60, max.=17.68) deg.
Tholen spectral type spec_T CU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

451 Patientia (1899 EY)          Discovered 1899-Dec-04 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1899 EY = A902 MB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-02 23:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin