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1722 Goffin (1938 EG)
Classification: Main-belt Asteroid          SPK-ID: 2001722
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05033041324850146 1.762e-08  
a 2.514120197455309 6.4973e-09 au
q 2.387583488960979 4.6269e-08 au
i 5.465722076713411 5.6173e-07 deg
node 168.0173396220118 6.872e-06 deg
peri 284.7982601666 1.809e-05 deg
M 25.64533923266334 1.8154e-05 deg
tp 2459292.775003262640
(2021-Mar-19.27500326)
7.3377e-05 TDB
period 1456.054002120198
3.99
5.6443e-06
1.545e-08
d
yr
n .2472435771446627 9.5843e-10 deg/d
Q 2.640656905949639 6.8243e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3282  
   data-arc span      30385 days (83.19 yr)  
   first obs. used      1938-02-23  
   last obs. used      2021-05-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4247  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:42:56  

Additional Information
 Earth MOID = 1.41147 au 
 Jupiter MOID = 2.43359 au 
 T_jup = 3.452 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.10   n/a E2021B10  
diameter diameter 10.290 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 29.19 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1984) http://www.asu.cas.cz/~ppravec/neo.htm]
[Ditteon, R.; Adam, A.; Doyel, M.; Gibson, J.; et al. (2018) Minor Planet Bull. 45, 13-16.]
geometric albedo albedo 0.224   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.890   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.11 deg.

1722 Goffin (1938 EG)          Discovered 1938-Feb-23 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 EG = 1942 DJ = 1950 HK = 1952 SW = 1952 UQ = 1960 WB = 1964 UF = 1964 VD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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