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 ]  
451 Patientia (A899 XA)
Classification: Main-belt Asteroid          SPK-ID: 2000451
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 120 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07447464523470684 3.2765e-08  
a 3.061121589485498 6.2509e-09 au
q 2.833145645088264 1.0054e-07 au
i 15.23852203454215 3.5621e-06 deg
node 89.24401375397555 1.3521e-05 deg
peri 336.5831960917784 2.7328e-05 deg
M 177.4668519433015 2.4609e-05 deg
tp 2458036.151427069204
(2017-Oct-09.65142707)
0.00013248 TDB
period 1956.227219075265
5.36
5.992e-06
1.641e-08
d
yr
n .1840277021450386 5.6369e-10 deg/d
Q 3.289097533882733 6.7165e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3371  
   data-arc span      44153 days (120.88 yr)  
   first obs. used      1899-12-07  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46347  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:28  

Additional Information
 Earth MOID = 1.85372 au 
 Jupiter MOID = 1.97292 au 
 T_jup = 3.176 
[ 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 6.7   n/a MPO492754 IRAS observations used: 17
magnitude slope G 0.19   n/a PDS3 (MPC 17258) Fit
diameter diameter 253.900 km 2.780 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.727 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 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]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.085   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.666   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=10; phase (min.=1.70, mean=9.61, max.=18.97) deg.
U-B UB 0.310   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A899 XA)          Discovered 1899-Dec-04 by Charlois, A. at Nice
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
1972-Nov-06 14:14 < 00:01 Jupiter 1.97805202762814 1.97805171677002 1.97805233848649 4.54713770508348 4.45197039999411 2441628.093126682 0.329256056313853 54.4769030406768 12.0632362241119 81.0628844562344 5121304.6343403 T 120 CATAB v2.0f-lin.ifort 2020-Nov-13 04:29:37 2020-Nov-13 04:29
2139-Jan-31 08:28 00:01 Jupiter 1.98542700097208 1.98542668088207 1.98542732106231 4.43196275605458 4.33463426657652 2502343.852905391 1.22614698033161 116.924985515131 14.0957359210135 87.1533799419392 5004938.15693577 T 120 CATAB v2.0f-lin.ifort 2020-Nov-13 04:29:37 2020-Nov-13 04:29
2197-Oct-06 21:43 00:02 Jupiter 1.99742022273889 1.99741979902659 1.99742064645256 4.62300177334921 4.530345340563 2523777.404834168 1.70371685049507 149.909008357198 16.6917627153501 -85.7911503130912 5330988.73301533 T 120 CATAB v2.0f-lin.ifort 2020-Nov-13 04:29:37 2020-Nov-13 04:29

Alternate Designations
 A899 XA = A902 MB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-25 09:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin