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17484 Ganghofer (1991 RY4)
Classification: Main-belt Asteroid          SPK-ID: 2017484
[ 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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1716690326110655 4.445e-08  
a 2.701145802267996 1.1443e-08 au
q 2.237442715451209 1.1773e-07 au
i 2.211332247041332 3.7583e-06 deg
node 214.9114061624257 9.3123e-05 deg
peri 148.0545834293484 9.3631e-05 deg
M 168.9083422164162 1.2586e-05 deg
tp 2458239.702518466488
(2018-May-01.20251847)		 5.4415e-05 TDB
period 1621.513122194656
4.44		 1.0304e-05
2.821e-08		 d
yr
n .2220148545654405 1.4108e-09 deg/d
Q 3.164848889084783 1.3408e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1435  
   data-arc span      15150 days (41.48 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:20:45  

Additional Information
 Earth MOID = 1.23542 au 
 Jupiter MOID = 2.29867 au 
 T_jup = 3.345 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456907.5 (2014-Sep-07.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169014245061773 4.405e-08  
q 2.245864676080897 1.1623e-07 au
tp 2456612.152489726263
(2013-Nov-15.65248973)		 5.1873e-05 TDB
node 215.2399124694204 9.3665e-05 deg
peri 146.9971983390275 9.4187e-05 deg
i 2.202456928056158 3.748e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1435  
   data-arc span      15150 days (41.48 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:20:45  

Additional Information
 Jupiter MOID = 2.29867 au 
 T_jup = 3.345 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.940372513770759E-15 -5.104125106284798E-15 6.957179863770943E-13 2.01300702362384E-14 5.439847133142467E-14 1.154575012644032E-16
q -5.104125106284798E-15 1.350991864591043E-14 -1.734029559395316E-12 -5.167203488032315E-14 -1.219504888417194E-13 -2.733141700245077E-16
tp 6.957179863770943E-13 -1.734029559395316E-12 2.690783080097149E-9 1.932503597780813E-11 5.229818030067677E-10 -4.753491860594838E-13
node 2.01300702362384E-14 -5.167203488032315E-14 1.932503597780813E-11 8.773061683421444E-9 -8.762843667482498E-9 -5.87020907651892E-11
peri 5.439847133142467E-14 -1.219504888417194E-13 5.229818030067677E-10 -8.762843667482498E-9 8.871209712075498E-9 5.855110258486595E-11
i 1.154575012644032E-16 -2.733141700245077E-16 -4.753491860594838E-13 -5.87020907651892E-11 5.855110258486595E-11 1.404718612396079E-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 14.6   n/a MPO416895  
diameter diameter 4.741 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17484 Ganghofer           Discovered 1991 Sept. 13 by F. Borngen and L. D. Schmadel at Tautenburg.
German author Ludwig Ganghofer (1855-1920), son of a forester, studied philosophy, was a dramatic advisor and editor, first in Vienna and later in Bavaria. He wrote numerous popular romantic dramas, short stories and novels, mainly with climbing or hunting themes. Some of these were made into movies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ 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
2099-Mar-18 22:16 < 00:01 David 0.0449635994672843 0.0449525131533631 0.0449746859326607 6.51771049892718 6.51771044737739 2487781.427671879 0.400088032248963 567.826004590941 32.9643556867174 -13.2942767889542 48297.313228148 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 02:20:48 2020-Nov-13 02:20

Alternate Designations
 1991 RY4 = 1978 WP1 = 1978 WY16 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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