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 ]  
90976 (1997 WH38)
Classification: Main-belt Asteroid          SPK-ID: 2090976
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640914376692062 4.4576e-08  
a 2.289313021430516 1.0052e-08 au
q 1.913656356469148 1.0328e-07 au
i 4.898927502606077 4.3192e-06 deg
node 246.8888021220273 5.3267e-05 deg
peri 150.5738542058263 5.4915e-05 deg
M 198.1912290556148 1.6341e-05 deg
tp 2459569.164022825275
(2021-Dec-20.66402283)
5.9908e-05 TDB
period 1265.191293539103
3.46
8.3333e-06
2.282e-08
d
yr
n .2845419517494282 1.8742e-09 deg/d
Q 2.664969686391883 1.1702e-08 au
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      8267 days (22.63 yr)  
   first obs. used      1997-11-26  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:41:41  

Additional Information
 Earth MOID = .923062 au 
 Jupiter MOID = 2.74565 au 
 T_jup = 3.577 
[ 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 16.0   n/a MPO309817  

90976 (1997 WH38)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ 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
2088-Aug-31 05:25 00:05 Iris 0.0377969244701895 0.0377801147913384 0.0378137344256749 1.72814576042508 1.72814567241423 2483929.725734725 5.44612865550107 852.667275236488 62.5078424181321 -11.128458048887 18577.3164025324 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 20:41:43 2020-Nov-12 20:41
2100-Dec-08 11:54 < 00:01 Hebe 0.0423035487618449 0.0422972834115159 0.0423098235474056 5.96637671590511 5.96637669127479 2488410.995887361 0.78412223420415 1050.70430605032 37.2811388778166 72.8090489153701 162129.196291137 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 20:41:43 2020-Nov-12 20:41

Alternate Designations
 1997 WH38 = 2000 QA227 
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-23 23:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin