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227973 (2007 HJ48)
Classification: Main-belt Asteroid          SPK-ID: 2227973
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0231704529329745 4.9429e-08  
a 3.064069196106507 3.0947e-08 au
q 2.993073325014745 1.5083e-07 au
i 9.230443547392882 5.535e-06 deg
node 199.3612512974766 2.6849e-05 deg
peri 177.5826109308452 0.00010371 deg
M 76.39851839063014 9.8493e-05 deg
tp 2458980.753391041654
(2020-May-11.25339104)
0.00053768 TDB
period 1959.053426399438
5.36
2.968e-05
8.126e-08
d
yr
n .1837622165627444 2.784e-09 deg/d
Q 3.13506506719827 3.1664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      6380 days (17.47 yr)  
   first obs. used      2003-08-21  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:52  

Additional Information
 Earth MOID = 1.99327 au 
 Jupiter MOID = 1.96277 au 
 T_jup = 3.213 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457841.5 (2017-Mar-29.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02392828582063941 4.9171e-08  
q 2.991553666180097 1.4863e-07 au
tp 2456975.167482625262
(2014-Nov-13.66748263)
0.00053444 TDB
node 199.4341653440405 2.6783e-05 deg
peri 169.2240627041109 0.0001017 deg
i 9.239057910794632 5.5418e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      6380 days (17.47 yr)  
   first obs. used      2003-08-21  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:52  

Additional Information
 Jupiter MOID = 1.96277 au 
 T_jup = 3.213 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.4178026867133E-15 -7.161488011657378E-15 3.422469119541587E-12 6.850199535341765E-16 6.563385842691419E-13 1.647725368187376E-17
q -7.161488011657378E-15 2.209107386631474E-14 -1.475574088655922E-11 -2.772086200228717E-15 -2.725863960244857E-12 1.320926748727183E-15
tp 3.422469119541587E-12 -1.475574088655922E-11 2.85626566241277E-7 5.61638326213436E-12 5.243860361916678E-8 6.531816905408431E-12
node 6.850199535341765E-16 -2.772086200228717E-15 5.61638326213436E-12 7.173363282326549E-10 -7.066214784363883E-10 1.31123555904022E-11
peri 6.563385842691419E-13 -2.725863960244857E-12 5.243860361916678E-8 -7.066214784363883E-10 1.034272912591313E-8 -1.166872174587549E-11
i 1.647725368187376E-17 1.320926748727183E-15 6.531816905408431E-12 1.31123555904022E-11 -1.166872174587549E-11 3.07120473338847E-11

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 15.37   n/a MPCxxxxx  
diameter diameter 3.810 km 1.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.092   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227973 (2007 HJ48)          Discovered 2007-Apr-20 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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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
2106-Mar-08 09:22 00:04 Jupiter 1.99328560189946 1.99328511826105 1.99328608553934 4.65570058827967 4.56351533958647 2490326.890042905 3.84626185609944 284.738398218721 21.0933211209236 -88.3878662881357 3360715.0948994 T 22 CATAB v2.0f-lin.ifort 2021-Apr-14 00:41:53 2021-Apr-14 00:41
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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