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875 Nymphe (A917 KG)
Classification: Main-belt Asteroid          SPK-ID: 2000875
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 .1512936503772627 1.4167e-08  
a 2.553006276786549 6.6413e-09 au
q 2.166752637735447 3.5579e-08 au
i 14.56902690036964 5.5007e-07 deg
node 196.0430822155427 1.2435e-06 deg
peri 117.1108001178389 8.0708e-06 deg
M 117.6575456475227 6.9288e-06 deg
tp 2458909.539724285492
(2020-Mar-01.03972429)
2.8249e-05 TDB
period 1489.965631124092
4.08
5.8139e-06
1.592e-08
d
yr
n .2416163114637759 9.428e-10 deg/d
Q 2.93925991583765 7.6461e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3100  
   data-arc span      37932 days (103.85 yr)  
   first obs. used      1917-05-26  
   last obs. used      2021-04-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38418  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:05:39  

Additional Information
 Earth MOID = 1.19634 au 
 Jupiter MOID = 2.47864 au 
 T_jup = 3.378 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457158.5 (2015-May-16.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514222470646691 1.4187e-08  
q 2.166071511658483 3.5693e-08 au
tp 2457421.451027097541
(2016-Feb-02.95102710)
2.7827e-05 TDB
node 196.0992442315809 1.2431e-06 deg
peri 117.4735271738579 8.0708e-06 deg
i 14.57449695392951 5.5033e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3100  
   data-arc span      37932 days (103.85 yr)  
   first obs. used      1917-05-26  
   last obs. used      2021-04-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38418  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:05:39  

Additional Information
 Jupiter MOID = 2.47864 au 
 T_jup = 3.378 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.012620705601387E-16 -5.001359660850248E-16 3.989202818808879E-14 -6.061277659789109E-15 3.584609617641641E-14 -3.00780443267024E-15
q -5.001359660850248E-16 1.273965357860245E-15 -1.06526398437133E-13 1.550665580216434E-14 -9.290033554729979E-14 7.666927108116546E-15
tp 3.989202818808879E-14 -1.06526398437133E-13 7.743216139430552E-10 -1.713483640535314E-12 2.15439833794045E-10 -6.952331166829455E-13
node -6.061277659789109E-15 1.550665580216434E-14 -1.713483640535314E-12 1.54518475808835E-12 -2.679121860312444E-12 5.384708431405325E-13
peri 3.584609617641641E-14 -9.290033554729979E-14 2.15439833794045E-10 -2.679121860312444E-12 6.513762177623785E-11 -1.003814922489653E-12
i -3.00780443267024E-15 7.666927108116546E-15 -6.952331166829455E-13 5.384708431405325E-13 -1.003814922489653E-12 3.028674803073725E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.21   n/a E2021B10  
diameter diameter 14.107 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.618 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2004) Minor Planet Bull. 31, 19-22.]
[Carbo, L.; Green, D.; Kragh, K.; Krotz, J.; et al. (2009) Minor Planet Bull. 36, 152-157.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.223   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

875 Nymphe (A917 KG)          Discovered 1917-May-19 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A917 KG = 1926 RL = 1970 GC1 = 1971 UK4 = A917 KF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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