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
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 ]  
499 Venusia (A902 YE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2160912836687478 3.3011e-08  
a 4.006795631352523 2.9572e-08 au
q 3.140962019975225 1.3958e-07 au
i 2.092649022895289 3.8202e-06 deg
node 256.2444086929074 0.00012836 deg
peri 174.8139540835072 0.00012881 deg
M 321.5214736864214 1.2879e-05 deg
tp 2459313.619521149855
0.00010703 TDB
period 2929.50480211528
n .122887663382582 1.3605e-09 deg/d
Q 4.87262924272982 3.5963e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2755  
   data-arc span      42765 days (117.08 yr)  
   first obs. used      1902-12-24  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47249  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:28:51  

Additional Information
 Earth MOID = 2.15555 au 
 Jupiter MOID = .439634 au 
 T_jup = 3.011 
[ 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 9.5   n/a MPO502157 IRAS observations used: 10
diameter diameter 77.328 km 1.055 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (  
rotation period rot_per 13.48 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Dahlgren, M.; Lahulla, J.F.; Lagerkvist, C.-I.; Lagerros, J.; et al. (1998) Icarus 133, 247-285.]
[Behrend, R. (2006) Observatoire de Geneve web site,]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.052   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (  
B-V BV 0.663   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.11, mean=11.62, max.=16.56) deg.
U-B UB 0.291   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=7.56, mean=13.75, max.=16.56) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

499 Venusia (A902 YE)          Discovered 1902-Dec-24 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A902 YE = 1950 CE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Apr-06 02:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin