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6915 (1992 HH)
Classification: Main-belt Asteroid          SPK-ID: 2006915
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1249613569017552 3.9944e-08  
a 2.603711937773924 1.0716e-08 au
q 2.278348561048396 1.0465e-07 au
i 12.0255373547049 3.377e-06 deg
node 97.61566097791146 1.8412e-05 deg
peri 116.8038805418972 2.1708e-05 deg
M 251.2174061200471 1.2862e-05 deg
tp 2459464.208159324919
(2021-Sep-06.70815932)
5.5991e-05 TDB
period 1534.573973674426
4.20
9.4732e-06
2.594e-08
d
yr
n .2345927965518704 1.4482e-09 deg/d
Q 2.929075314499452 1.2055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2759  
   data-arc span      15237 days (41.72 yr)  
   first obs. used      1979-02-28  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:28:52  

Additional Information
 Earth MOID = 1.29829 au 
 Jupiter MOID = 2.13794 au 
 T_jup = 3.371 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457157.5 (2015-May-15.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1254649778646154 3.9915e-08  
q 2.276268966490849 1.0459e-07 au
tp 2456397.493660138055
(2013-Apr-14.99366014)
5.0763e-05 TDB
node 97.66428931619113 1.8422e-05 deg
peri 117.0782657299917 2.169e-05 deg
i 12.02370959618804 3.3758e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2759  
   data-arc span      15237 days (41.72 yr)  
   first obs. used      1979-02-28  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:28:52  

Additional Information
 Jupiter MOID = 2.13794 au 
 T_jup = 3.371 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.593187837879244E-15 -4.157750828525815E-15 -2.551966911696966E-14 5.368963220235999E-15 2.1710698078581E-14 -3.632692257776349E-15
q -4.157750828525815E-15 1.093802858307693E-14 1.094729474203715E-13 -1.302965924514526E-14 -3.939389578489584E-14 9.908180877085842E-15
tp -2.551966911696966E-14 1.094729474203715E-13 2.576892951664907E-9 7.733698908479832E-12 5.988033746690527E-10 2.288353573933261E-13
node 5.368963220235999E-15 -1.302965924514526E-14 7.733698908479832E-12 3.39356693542403E-10 -3.296363450423512E-10 -1.825574228488789E-11
peri 2.1710698078581E-14 -3.939389578489584E-14 5.988033746690527E-10 -3.296363450423512E-10 4.704625860822566E-10 1.792083369397303E-11
i -3.632692257776349E-15 9.908180877085842E-15 2.288353573933261E-13 -1.825574228488789E-11 1.792083369397303E-11 1.139576181221616E-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 13.0   n/a MPO416788  
diameter diameter 7.098 km 1.686 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.76345 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.320   0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6915 (1992 HH)          Discovered 1992-Apr-30 by Kushida, Y., Muramatsu, O. at Yatsugatake
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
2178-Dec-05 16:34 00:01 Pallas 0.0268244020713858 0.0268067016464173 0.0268421116225469 11.0240279846685 11.0240276614172 2516897.190238490 1.40684374417796 1178.09610512341 34.0326949052911 41.510014637344 78145.7338259764 T 38 CATAB v2.0f-lin.ifort 2020-Dec-18 02:28:59 2020-Dec-18 02:28

Alternate Designations
 1992 HH = 1979 DG = 1988 LN = 2001 OS82 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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