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7341 (1991 VK)
Classification: Apollo [NEO, PHA]          SPK-ID: 2007341
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 310 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5058778453700236 2.3108e-09  
a 1.842013542155462 3.577e-10 au
q .9101797003074518 4.1869e-09 au
i 5.412420544723602 1.7395e-06 deg
node 294.7886522892758 1.4672e-05 deg
peri 173.4923684536118 1.3434e-05 deg
M 282.9191374466337 9.3822e-07 deg
tp 2459592.015737315369
(2022-Jan-12.51573732)
2.3661e-06 TDB
period 913.1406045800519
2.50
2.6599e-07
7.282e-10
d
yr
n .3942437760344278 1.1484e-10 deg/d
Q 2.773847384003473 5.3866e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -5.781201570339929E-15 1.945E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      1559  
   # delay obs. used      10  
   # Doppler obs. used      3  
   data-arc span      10865 days (29.75 yr)  
   first obs. used      1991-09-12  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .33507  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-13 08:26:21  

Additional Information
 Earth MOID = .0472681 au 
 Jupiter MOID = 2.38304 au 
 T_jup = 3.847 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ show covariance matrix ]

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 16.84   n/a MPCxxxxx  
diameter diameter 0.982 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 4.2096 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.]
[Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 22-36.]
geometric albedo albedo 0.235   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7341 (1991 VK)          Discovered 1991-Nov-01 by Helin, E. F., Lawrence, K. J. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 VK = 1981 UX12 = 1991 TS1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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