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 ]  
549 Jessonda (A904 WA)
Classification: Main-belt Asteroid          SPK-ID: 2000549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2583811534591017 3.6552e-08  
a 2.684020998087268 8.923e-09 au
q 1.99052055669303 1.0061e-07 au
i 3.960348889442212 3.9309e-06 deg
node 291.404708081984 6.9931e-05 deg
peri 158.0419638839745 7.0529e-05 deg
M 353.7410072964163 1.0122e-05 deg
tp 2458628.424103247510
(2019-May-24.92410325)
4.5225e-05 TDB
period 1606.117413006046
4.40
8.0092e-06
2.193e-08
d
yr
n .2241430153765757 1.1177e-09 deg/d
Q 3.377521439481506 1.1228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2571  
   data-arc span      41772 days (114.37 yr)  
   first obs. used      1904-11-16  
   last obs. used      2019-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43404  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:09:23  

Additional Information
 Earth MOID = 1.00772 au 
 Jupiter MOID = 1.84781 au 
 T_jup = 3.323 
[ 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 11.01   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 20
diameter diameter 15.530 km 0.645 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.962 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
[Stephens, R.D. (2015) Minor Planet Bull. 42, 104-106.]
geometric albedo albedo 0.289   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.827   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.21 deg.
U-B UB 0.361   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.21 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

549 Jessonda (A904 WA)          Discovered 1904-Nov-15 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin