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
JPL Small-Body Database Browser
Search: [ help ]  
531224 (2012 HK85)
Classification: TransNeptunian Object          SPK-ID: 2531224
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3425652997884066 2.8449e-05  
a 58.09538813467651 0.0031287 au
q 38.19392408199722 0.00067192 au
i 4.80831972311517 8.6159e-05 deg
node 75.89653250691427 0.00080186 deg
peri 174.3474302163332 0.0050664 deg
M 348.5745509605629 0.0027762 deg
tp 2464133.623225514189
(2034-Jun-20.12322551)
0.96306 TDB
period 161737.5697713635
442.81
13.066
0.03577
d
yr
n .002225827929212152 1.7981e-07 deg/d
Q 77.99685218735581 0.0042005 au
  Orbit Determination Parameters
   # obs. used (total)      73  
   data-arc span      7438 days (20.36 yr)  
   first obs. used      2000-02-12  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .70443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:56:30  

Additional Information
 Earth MOID = 37.1799 au 
 Jupiter MOID = 32.8509 au 
 T_jup = 6.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457282.5 (2015-Sep-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3403706075773327 2.8559e-05  
q 38.27491147834666 0.00066011 au
tp 2463953.895190052497
(2033-Dec-22.39519005)
0.97544 TDB
node 75.85337830524917 0.00080004 deg
peri 173.4614748340624 0.0050876 deg
i 4.812953089719352 8.6153e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      73  
   data-arc span      7438 days (20.36 yr)  
   first obs. used      2000-02-12  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .70443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:56:30  

Additional Information
 Jupiter MOID = 32.8509 au 
 T_jup = 6.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.156327499271557E-10 9.201800779644076E-9 -8.720136947694637E-6 -1.866877684167841E-10 -4.189383214376869E-8 3.740396210362351E-11
q 9.201800779644076E-9 4.357447371810088E-7 -.0006296095944091653 -2.469555382411085E-9 -3.231783009158319E-6 6.194419738937163E-10
tp -8.720136947694637E-6 -.0006296095944091653 .9514738508393009 2.493208270023959E-6 .004899716130707511 -6.996138994513132E-7
node -1.866877684167841E-10 -2.469555382411085E-9 2.493208270023959E-6 6.400680525225071E-7 -6.255347998404652E-7 -6.840871624024833E-8
peri -4.189383214376869E-8 -3.231783009158319E-6 .004899716130707511 -6.255347998404652E-7 2.58836298822757E-5 6.466894999784188E-8
i 3.740396210362351E-11 6.194419738937163E-10 -6.996138994513132E-7 -6.840871624024833E-8 6.466894999784188E-8 7.422265927141301E-9

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.9   n/a E2018Y78  

531224 (2012 HK85)          Discovered 2012-Apr-27 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-27 11:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin