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JPL Small-Body Database Browser
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154923 (2004 SK39)
Classification: Main-belt Asteroid          SPK-ID: 2154923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .328669728853364 3.2999e-08  
a 3.071603009785862 2.7534e-08 au
q 2.062060081414366 1.0452e-07 au
i 1.983696613721538 4.2612e-06 deg
node 135.4788419011332 0.00017943 deg
peri 197.4441935080462 0.00017969 deg
M 353.6154039812428 1.3854e-05 deg
tp 2459035.372009600339
(2020-Jul-04.87200960)
7.6033e-05 TDB
period 1966.283131969515
5.38
2.6439e-05
7.239e-08
d
yr
n .1830865525655038 2.4618e-09 deg/d
Q 4.081145938157357 3.6584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7111 days (19.47 yr)  
   first obs. used      1999-12-07  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:35:27  

Additional Information
 Earth MOID = 1.05193 au 
 Jupiter MOID = 1.30853 au 
 T_jup = 3.144 
[ 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 15.5   n/a MPO439923  

154923 (2004 SK39)          Discovered 2004-Sep-17 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ 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
1920-Aug-25 04:01 00:04 Jupiter 1.29632817542244 1.29632690312344 1.29632944773592 0.521287314206487 n/a 2422561.667266417 4.44344009919813 263.379795212874 33.9143672361958 -78.153429749578 5596300.18047824 F 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
1980-Jan-03 05:21 00:01 Jupiter 1.29641376042692 1.29641324127257 1.29641427958187 0.516512463218701 n/a 2444241.723211193 1.40389661666422 150.431902158844 24.7197919153831 -87.0295820518022 7832408.45363714 F 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
2039-Jun-11 21:09 00:01 Jupiter 1.30698680817022 1.30698641464978 1.30698720169065 0.504544606189041 n/a 2465951.381409012 1.07677957326881 150.408928653481 19.6230322837464 -89.9626391999275 9960270.14833181 F 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
2048-Dec-23 23:51 00:02 Jupiter 1.98607988559913 1.98607836670003 1.98608140449676 2.40327295945527 2.21872976211482 2469434.493861537 1.81965479850981 58.0573632201393 8.595456577404 -88.3838650979996 899199.380285498 T 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
2098-Dec-22 18:23 00:04 Jupiter 1.33748340913934 1.33748191147811 1.33748490681724 0.470592600268211 n/a 2487695.265705543 3.7873943496933 299.852743377672 43.7319667199614 -78.2243877343646 4479391.5041453 F 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
2108-Jul-27 13:07 00:05 Jupiter 1.90147011497978 1.9014658883671 1.90147434156283 1.87569687290332 1.62090266526812 2491199.046827365 5.24491810982777 302.745201551876 43.0190413395425 23.6702237950582 479689.577652579 T 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
2158-Aug-20 04:39 00:07 Jupiter 1.41671297615422 1.41670860740387 1.41671734513399 0.374467712169653 n/a 2509484.693844921 7.17741985763133 937.260214696024 36.0509350215048 -76.7378914995458 5720290.67364074 F 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35
2168-Apr-24 07:59 00:09 Jupiter 1.75159630680325 1.75158904732436 1.75160356732938 1.0643216430993 0.406985297117285 2513019.832641242 9.15292413244196 46045.2141369082 463.008008077128 -6.89929326154067 929679.589978075 T 15 CATAB v2.0f-lin.ifort 2020-Feb-24 09:35:33 2020-Feb-24 09:35

Alternate Designations
 2004 SK39 = 1999 XL61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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