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29489 (1997 WQ)
Classification: Main-belt Asteroid          SPK-ID: 2029489
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1951236810516549 1.6138e-08  
a 2.640908467608042 9.513e-09 au
q 2.125604686087875 4.3393e-08 au
i 12.71468016209022 4.852e-07 deg
node 54.1674410322378 1.9145e-06 deg
peri 258.3858998307972 4.9173e-06 deg
M 272.9790636111005 7.0798e-06 deg
tp 2459775.421896180195
(2022-Jul-14.92189618)
3.2071e-05 TDB
period 1567.57543972224
4.29
8.47e-06
2.319e-08
d
yr
n .2296540191161636 1.2409e-09 deg/d
Q 3.156212249128207 1.1369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2742  
   data-arc span      15304 days (41.90 yr)  
   first obs. used      1979-08-15  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:53:45  

Additional Information
 Earth MOID = 1.15446 au 
 Jupiter MOID = 2.22507 au 
 T_jup = 3.333 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1962896199840105 1.6213e-08  
q 2.122473303830399 4.3666e-08 au
tp 2456637.048819913053
(2013-Dec-10.54881991)
2.5209e-05 TDB
node 54.29083755729053 1.9182e-06 deg
peri 257.8953515702397 4.906e-06 deg
i 12.70460515236292 4.8499e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2742  
   data-arc span      15304 days (41.90 yr)  
   first obs. used      1979-08-15  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:53:45  

Additional Information
 Jupiter MOID = 2.22507 au 
 T_jup = 3.333 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.628689369932536E-16 -6.971962008194177E-16 3.222824064396415E-13 4.296273798252253E-15 4.203202864675304E-14 1.912437236448194E-16
q -6.971962008194177E-16 1.906752975395342E-15 -8.287926055983273E-13 -1.147636518216633E-14 -1.023250724216887E-13 -5.041188389199575E-16
tp 3.222824064396415E-13 -8.287926055983273E-13 6.354871957214464E-10 -5.999091764310605E-12 1.117328241485192E-10 -1.620732514831344E-12
node 4.296273798252253E-15 -1.147636518216633E-14 -5.999091764310605E-12 3.67937250561083E-12 -4.493336479804922E-12 3.267528076492485E-13
peri 4.203202864675304E-14 -1.023250724216887E-13 1.117328241485192E-10 -4.493336479804922E-12 2.406910111273321E-11 -5.821301259466544E-13
i 1.912437236448194E-16 -5.041188389199575E-16 -1.620732514831344E-12 3.267528076492485E-13 -5.821301259466544E-13 2.35212233108999E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.46   n/a MPO636495  
rotation period rot_per 3.16796 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

29489 (1997 WQ)          Discovered 1997-Nov-18 by Kobayashi, T. at Oizumi
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WQ = 1999 CU123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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