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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3286697263650307 3.2617e-08  
a 3.071603022294101 1.9024e-08 au
q 2.062060097454698 1.0063e-07 au
i 1.98369564563604 4.1796e-06 deg
node 135.4789342100692 0.00016113 deg
peri 197.4441056811318 0.00016131 deg
M 353.6153970791649 8.6334e-06 deg
tp 2459035.372047511791
(2020-Jul-04.87204751)
4.7314e-05 TDB
period 1966.283143980218
5.38
1.8267e-05
5.001e-08
d
yr
n .183086551447151 1.7009e-09 deg/d
Q 4.081145947133505 2.5277e-08 au
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      7544 days (20.65 yr)  
   first obs. used      1999-12-07  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5871  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 11:58:43  

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 04:00 00:03 Jupiter 1.29632800275654 1.29632706750126 1.29632893801758 0.52128728418609 n/a 2422561.666804166 3.11415278072647 193.044060955965 32.0234952950363 -79.7407934979815 5959428.59975506 F 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
1980-Jan-03 05:21 00:01 Jupiter 1.29641371335736 1.29641326342237 1.29641416329242 0.516512421066676 n/a 2444241.723062641 1.01778268745047 130.924155548159 22.2751463997326 -88.8072974116752 8701546.81724666 F 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
2039-Jun-11 21:09 < 00:01 Jupiter 1.30698684002497 1.30698646911596 1.306987210934 0.504544540316444 n/a 2465951.381532067 0.774724906379389 140.759918376182 18.477663688275 89.6643887669634 10577498.064009 F 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
2048-Dec-23 23:51 00:01 Jupiter 1.98607975147336 1.98607840108127 1.98608110186422 2.40327221300477 2.21872894059712 2469434.494030200 1.35026934362123 50.8800476293848 8.56998989411397 -88.5971052916384 927206.395342121 T 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
2098-Dec-22 18:23 00:03 Jupiter 1.33748360366588 1.33748242679061 1.33748478055061 0.470592419834114 n/a 2487695.266086844 2.79745855530212 245.246513083513 39.1877090612026 -79.6042407867164 5022318.24150214 F 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
2108-Jul-27 13:08 00:04 Jupiter 1.90146960153132 1.9014662158609 1.90147298718271 1.87569396726558 1.62089922867515 2491199.047320460 3.92922685145241 240.428806271923 42.8385543634794 23.3625934442207 492169.536808032 T 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
2158-Aug-20 04:40 00:05 Jupiter 1.41671354290279 1.4167101412897 1.41671694465013 0.374467209766041 n/a 2509484.694533560 5.38973575076252 721.611608027043 33.3173992758787 -76.6596226691218 6187733.4159121 F 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58
2168-Apr-24 08:00 00:07 Jupiter 1.7515953929383 1.75158967824656 1.75160110827383 1.06431702748684 0.406972606581667 2513019.833508450 6.92700663949964 36238.3166812394 438.998890449648 -6.88739844270496 981617.883542154 T 16 CATAB v2.0f-lin.ifort 2020-Aug-25 11:58:51 2020-Aug-25 11:58

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