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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
43904 (1995 WO)
Classification: Main-belt Asteroid          SPK-ID: 2043904
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2771850281369503 2.5174e-08  
a 2.380979369644501 6.0148e-09 au
q 1.721007536076092 6.0256e-08 au
i 8.236165924749157 3.5089e-06 deg
node 197.7824584875376 2.1421e-05 deg
peri 139.5897410423641 2.2384e-05 deg
M 39.29772371069232 7.392e-06 deg
tp 2459250.013780926112
(2021-Feb-04.51378093)
2.7235e-05 TDB
period 1341.93622141659
3.67
5.085e-06
1.392e-08
d
yr
n .268269083324968 1.0165e-09 deg/d
Q 3.040951203212911 7.682e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      10569 days (28.94 yr)  
   first obs. used      1991-09-12  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50419  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:43:43  

Additional Information
 Earth MOID = .721619 au 
 Jupiter MOID = 2.4087 au 
 T_jup = 3.472 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457278.5 (2015-Sep-13.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2762429775593004 2.511e-08  
q 1.724991788541317 6.0063e-08 au
tp 2457908.233907726445
(2017-Jun-03.73390773)
2.4969e-05 TDB
node 197.836299973477 2.145e-05 deg
peri 139.5190983373187 2.2416e-05 deg
i 8.226136664279295 3.5055e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      10569 days (28.94 yr)  
   first obs. used      1991-09-12  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50419  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:43:43  

Additional Information
 Jupiter MOID = 2.4087 au 
 T_jup = 3.472 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.305206467331512E-16 -1.504199328785919E-15 9.021217414019021E-14 -4.054714337853061E-15 3.542383934624716E-14 -1.389710753897712E-15
q -1.504199328785919E-15 3.607573016608254E-15 -1.702865874095433E-13 8.1911501433156E-15 -7.490867274925968E-14 3.334826636426754E-15
tp 9.021217414019021E-14 -1.702865874095433E-13 6.234439931776168E-10 -9.683170613232281E-13 1.706737514473331E-10 9.844792637028826E-13
node -4.054714337853061E-15 8.1911501433156E-15 -9.683170613232281E-13 4.600837951236774E-10 -4.549806281972901E-10 1.352928505993626E-11
peri 3.542383934624716E-14 -7.490867274925968E-14 1.706737514473331E-10 -4.549806281972901E-10 5.024990032504595E-10 -1.31505177765913E-11
i -1.389710753897712E-15 3.334826636426754E-15 9.844792637028826E-13 1.352928505993626E-11 -1.31505177765913E-11 1.228827832782473E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.15   n/a E2021B10  
rotation period rot_per 200. h n/a LCDB (Rev. 2020-October); 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm]

43904 (1995 WO)          Discovered 1995-Nov-16 by Urata, T. at Oohira
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WO = 1991 RH34 = 1998 KQ34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-23 13:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin