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JPL Small-Body Database Browser
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295370 (2008 HK54)
Classification: Main-belt Asteroid          SPK-ID: 2295370
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04073351461090332 5.1877e-08  
a 3.121834362470259 4.1045e-08 au
q 2.994671076853757 1.5853e-07 au
i 19.05892650466727 8.9242e-06 deg
node 61.23537354928141 1.5863e-05 deg
peri 99.61740769768458 0.00011387 deg
M 63.6511841330635 0.00011113 deg
tp 2458244.280902893937
(2018-May-05.78090289)
0.00062325 TDB
period 2014.713107144999
5.52
3.9733e-05
1.088e-07
d
yr
n .1786854906156576 3.5239e-09 deg/d
Q 3.248997648086762 4.2716e-08 au
  Orbit Determination Parameters
   # obs. used (total)      217  
   data-arc span      6819 days (18.67 yr)  
   first obs. used      2000-11-26  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58555  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:43:00  

Additional Information
 Earth MOID = 2.05221 au 
 Jupiter MOID = 1.84055 au 
 T_jup = 3.130 
[ 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 15.9   n/a MPO437320  
diameter diameter 4.577 km 1.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

295370 (2008 HK54)          Discovered 2008-Apr-29 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ 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
1917-Jul-27 01:44 00:05 Jupiter 1.903920995349 1.90391931890958 1.90392267187629 5.80908101792508 5.73198532965675 2421436.571956601 5.14883581081854 710.073750333096 30.265530191049 -83.8749057561812 2060524.02264495 T 12 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43
1999-Dec-11 07:15 < 00:01 Jupiter 1.86742018719374 1.86741941965633 1.86742095473316 5.36188226679386 5.27661098744933 2451523.802381384 0.910483680951643 300.776947297542 33.5930931406836 -87.2139199630404 2049642.92048126 T 12 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43
2071-Dec-03 18:21 00:03 Jupiter 1.92112170691802 1.92112021519245 1.92112319867831 5.83351030330954 5.75743367355872 2477814.264688291 2.92474603882277 463.748448654563 30.5567950792664 -81.7636439067352 2086021.778529 T 12 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43
2082-Apr-09 04:05 00:04 Jupiter 1.96841182376432 1.96840994587617 1.96841370169321 4.52443832685463 4.42830972564367 2481593.669821040 4.1078374405755 723.242984107203 74.6338079330734 -84.3065062262508 2049327.80986453 T 12 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43
2154-Apr-23 10:39 00:07 Jupiter 1.84769342526612 1.8476926419684 1.84769420856384 5.52443827147236 5.44082485298023 2507904.943661502 7.35110402343551 775.772531010124 38.5567686563079 89.718449835999 1730800.53979978 T 12 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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